- Changed the used random function pointer to more flexible format. Renamed havege_rand() to havege_random() to prevent mistakes. Lots of changes as a consequence in library code and programs

diff --git a/programs/pkey/dh_genprime.c b/programs/pkey/dh_genprime.c
index f6ae03f..ae31a1e 100644
--- a/programs/pkey/dh_genprime.c
+++ b/programs/pkey/dh_genprime.c
@@ -80,7 +80,7 @@
      * This can take a long time...
      */
     if( ( ret = mpi_gen_prime( &P, DH_P_SIZE, 1,
-                               havege_rand, &hs ) ) != 0 )
+                               havege_random, &hs ) ) != 0 )
     {
         printf( " failed\n  ! mpi_gen_prime returned %d\n\n", ret );
         goto exit;
@@ -101,7 +101,7 @@
         goto exit;
     }
 
-    if( ( ret = mpi_is_prime( &Q, havege_rand, &hs ) ) != 0 )
+    if( ( ret = mpi_is_prime( &Q, havege_random, &hs ) ) != 0 )
     {
         printf( " failed\n  ! mpi_is_prime returned %d\n\n", ret );
         goto exit;