Include configuration file to headers

Add inclusion to configration file in header files,
instead of relying on other header files to include
the configuration file. This issue resolves #1371
diff --git a/include/mbedtls/aesni.h b/include/mbedtls/aesni.h
index 746baa0..7b16b4b 100644
--- a/include/mbedtls/aesni.h
+++ b/include/mbedtls/aesni.h
@@ -24,6 +24,12 @@
 #ifndef MBEDTLS_AESNI_H
 #define MBEDTLS_AESNI_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "aes.h"
 
 #define MBEDTLS_AESNI_AES      0x02000000u
diff --git a/include/mbedtls/asn1write.h b/include/mbedtls/asn1write.h
index f76fc80..dc6947b 100644
--- a/include/mbedtls/asn1write.h
+++ b/include/mbedtls/asn1write.h
@@ -24,6 +24,12 @@
 #ifndef MBEDTLS_ASN1_WRITE_H
 #define MBEDTLS_ASN1_WRITE_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "asn1.h"
 
 #define MBEDTLS_ASN1_CHK_ADD(g, f) do { if( ( ret = f ) < 0 ) return( ret ); else   \
diff --git a/include/mbedtls/bn_mul.h b/include/mbedtls/bn_mul.h
index 80e4b38..dbdc0a3 100644
--- a/include/mbedtls/bn_mul.h
+++ b/include/mbedtls/bn_mul.h
@@ -38,6 +38,12 @@
 #ifndef MBEDTLS_BN_MUL_H
 #define MBEDTLS_BN_MUL_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "bignum.h"
 
 #if defined(MBEDTLS_HAVE_ASM)
diff --git a/include/mbedtls/ccm.h b/include/mbedtls/ccm.h
index 630b7fd..e311e75 100644
--- a/include/mbedtls/ccm.h
+++ b/include/mbedtls/ccm.h
@@ -34,6 +34,12 @@
 #ifndef MBEDTLS_CCM_H
 #define MBEDTLS_CCM_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "cipher.h"
 
 #define MBEDTLS_ERR_CCM_BAD_INPUT       -0x000D /**< Bad input parameters to the function. */
diff --git a/include/mbedtls/certs.h b/include/mbedtls/certs.h
index 8dab7b5..b7c5708 100644
--- a/include/mbedtls/certs.h
+++ b/include/mbedtls/certs.h
@@ -24,6 +24,12 @@
 #ifndef MBEDTLS_CERTS_H
 #define MBEDTLS_CERTS_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include <stddef.h>
 
 #ifdef __cplusplus
diff --git a/include/mbedtls/cmac.h b/include/mbedtls/cmac.h
index 24839a2..adfe1c3 100644
--- a/include/mbedtls/cmac.h
+++ b/include/mbedtls/cmac.h
@@ -26,6 +26,12 @@
 #ifndef MBEDTLS_CMAC_H
 #define MBEDTLS_CMAC_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "cipher.h"
 
 #ifdef __cplusplus
diff --git a/include/mbedtls/compat-1.3.h b/include/mbedtls/compat-1.3.h
index 600a0f1..94de845 100644
--- a/include/mbedtls/compat-1.3.h
+++ b/include/mbedtls/compat-1.3.h
@@ -25,6 +25,12 @@
  *  This file is part of mbed TLS (https://tls.mbed.org)
  */
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #if ! defined(MBEDTLS_DEPRECATED_REMOVED)
 
 #if defined(MBEDTLS_DEPRECATED_WARNING)
diff --git a/include/mbedtls/ctr_drbg.h b/include/mbedtls/ctr_drbg.h
index 2b4dc73..5a32843 100644
--- a/include/mbedtls/ctr_drbg.h
+++ b/include/mbedtls/ctr_drbg.h
@@ -28,6 +28,12 @@
 #ifndef MBEDTLS_CTR_DRBG_H
 #define MBEDTLS_CTR_DRBG_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "aes.h"
 
 #if defined(MBEDTLS_THREADING_C)
diff --git a/include/mbedtls/ecdsa.h b/include/mbedtls/ecdsa.h
index ff6efbc..cfd1370 100644
--- a/include/mbedtls/ecdsa.h
+++ b/include/mbedtls/ecdsa.h
@@ -31,6 +31,12 @@
 #ifndef MBEDTLS_ECDSA_H
 #define MBEDTLS_ECDSA_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "ecp.h"
 #include "md.h"
 
diff --git a/include/mbedtls/ecjpake.h b/include/mbedtls/ecjpake.h
index d86e820..8d09bf2 100644
--- a/include/mbedtls/ecjpake.h
+++ b/include/mbedtls/ecjpake.h
@@ -40,6 +40,11 @@
  * The payloads are serialized in a way suitable for use in TLS, but could
  * also be use outside TLS.
  */
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
 
 #include "ecp.h"
 #include "md.h"
diff --git a/include/mbedtls/ecp.h b/include/mbedtls/ecp.h
index 7b8ffff..6c43c00 100644
--- a/include/mbedtls/ecp.h
+++ b/include/mbedtls/ecp.h
@@ -24,6 +24,12 @@
 #ifndef MBEDTLS_ECP_H
 #define MBEDTLS_ECP_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "bignum.h"
 
 /*
diff --git a/include/mbedtls/ecp_internal.h b/include/mbedtls/ecp_internal.h
index 1804069..7625ed4 100644
--- a/include/mbedtls/ecp_internal.h
+++ b/include/mbedtls/ecp_internal.h
@@ -61,6 +61,12 @@
 #ifndef MBEDTLS_ECP_INTERNAL_H
 #define MBEDTLS_ECP_INTERNAL_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #if defined(MBEDTLS_ECP_INTERNAL_ALT)
 
 /**
diff --git a/include/mbedtls/gcm.h b/include/mbedtls/gcm.h
index 00ed421..bd258aa 100644
--- a/include/mbedtls/gcm.h
+++ b/include/mbedtls/gcm.h
@@ -31,6 +31,12 @@
 #ifndef MBEDTLS_GCM_H
 #define MBEDTLS_GCM_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "cipher.h"
 
 #include <stdint.h>
diff --git a/include/mbedtls/hmac_drbg.h b/include/mbedtls/hmac_drbg.h
index dd31fc8..f58b1e3 100644
--- a/include/mbedtls/hmac_drbg.h
+++ b/include/mbedtls/hmac_drbg.h
@@ -24,6 +24,12 @@
 #ifndef MBEDTLS_HMAC_DRBG_H
 #define MBEDTLS_HMAC_DRBG_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "md.h"
 
 #if defined(MBEDTLS_THREADING_C)
diff --git a/include/mbedtls/net.h b/include/mbedtls/net.h
index 6c13b53..8cead58 100644
--- a/include/mbedtls/net.h
+++ b/include/mbedtls/net.h
@@ -23,6 +23,11 @@
  *
  *  This file is part of mbed TLS (https://tls.mbed.org)
  */
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
 
 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
 #include "net_sockets.h"
diff --git a/include/mbedtls/padlock.h b/include/mbedtls/padlock.h
index 677936e..918e619 100644
--- a/include/mbedtls/padlock.h
+++ b/include/mbedtls/padlock.h
@@ -25,6 +25,12 @@
 #ifndef MBEDTLS_PADLOCK_H
 #define MBEDTLS_PADLOCK_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "aes.h"
 
 #define MBEDTLS_ERR_PADLOCK_DATA_MISALIGNED               -0x0030  /**< Input data should be aligned. */
diff --git a/include/mbedtls/pem.h b/include/mbedtls/pem.h
index 2cf4c0a..8191850 100644
--- a/include/mbedtls/pem.h
+++ b/include/mbedtls/pem.h
@@ -24,6 +24,12 @@
 #ifndef MBEDTLS_PEM_H
 #define MBEDTLS_PEM_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include <stddef.h>
 
 /**
diff --git a/include/mbedtls/ssl_ciphersuites.h b/include/mbedtls/ssl_ciphersuites.h
index 1d2aabc..655d130 100644
--- a/include/mbedtls/ssl_ciphersuites.h
+++ b/include/mbedtls/ssl_ciphersuites.h
@@ -24,6 +24,12 @@
 #ifndef MBEDTLS_SSL_CIPHERSUITES_H
 #define MBEDTLS_SSL_CIPHERSUITES_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "pk.h"
 #include "cipher.h"
 #include "md.h"
diff --git a/include/mbedtls/ssl_cookie.h b/include/mbedtls/ssl_cookie.h
index 80b65bb..6a7ff9c 100644
--- a/include/mbedtls/ssl_cookie.h
+++ b/include/mbedtls/ssl_cookie.h
@@ -24,6 +24,12 @@
 #ifndef MBEDTLS_SSL_COOKIE_H
 #define MBEDTLS_SSL_COOKIE_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "ssl.h"
 
 #if defined(MBEDTLS_THREADING_C)
diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index 2b5a616..168d4a2 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -24,6 +24,12 @@
 #ifndef MBEDTLS_SSL_INTERNAL_H
 #define MBEDTLS_SSL_INTERNAL_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 #include "ssl.h"
 #include "cipher.h"
 
diff --git a/include/mbedtls/ssl_ticket.h b/include/mbedtls/ssl_ticket.h
index 93ad46a..ff7eccb 100644
--- a/include/mbedtls/ssl_ticket.h
+++ b/include/mbedtls/ssl_ticket.h
@@ -24,6 +24,12 @@
 #ifndef MBEDTLS_SSL_TICKET_H
 #define MBEDTLS_SSL_TICKET_H
 
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
 /*
  * This implementation of the session ticket callbacks includes key
  * management, rotating the keys periodically in order to preserve forward