- 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_server.c b/programs/pkey/dh_server.c
index de2ce97..70af54c 100644
--- a/programs/pkey/dh_server.c
+++ b/programs/pkey/dh_server.c
@@ -172,7 +172,7 @@
     memset( buf, 0, sizeof( buf ) );
 
     if( ( ret = dhm_make_params( &dhm, 256, buf, &n,
-                                 havege_rand, &hs ) ) != 0 )
+                                 havege_random, &hs ) ) != 0 )
     {
         printf( " failed\n  ! dhm_make_params returned %d\n\n", ret );
         goto exit;