cleanup programs

Clean up the contents of programs, add more guards to includes, move all
defines to the top of the top of files, remove some unused includes
diff --git a/programs/test/benchmark.c b/programs/test/benchmark.c
index cc83746..3784081 100644
--- a/programs/test/benchmark.c
+++ b/programs/test/benchmark.c
@@ -29,13 +29,11 @@
 #if defined(POLARSSL_PLATFORM_C)
 #include "polarssl/platform.h"
 #else
+#include <stdio.h>
 #define polarssl_printf     printf
 #endif
 
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-
+#if defined(POLARSSL_TIMING_C)
 #include "polarssl/timing.h"
 
 #include "polarssl/md4.h"
@@ -60,6 +58,11 @@
 #include "polarssl/ecdh.h"
 #include "polarssl/error.h"
 
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#endif
+
 #if defined _MSC_VER && !defined snprintf
 #define snprintf _snprintf
 #endif
@@ -78,7 +81,6 @@
     return( 0 );
 }
 #else
-
 static int myrand( void *rng_state, unsigned char *output, size_t len )
 {
     size_t use_len;
diff --git a/programs/test/o_p_test.c b/programs/test/o_p_test.c
index b904a9f..19fef9c 100644
--- a/programs/test/o_p_test.c
+++ b/programs/test/o_p_test.c
@@ -29,19 +29,18 @@
 #if defined(POLARSSL_PLATFORM_C)
 #include "polarssl/platform.h"
 #else
+#include <stdio.h>
 #define polarssl_printf     printf
 #endif
 
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/stat.h>
-
+#if defined(POLARSSL_BIGNUM_C) && defined(POLARSSL_RSA_C) &&\
+    defined(POLARSSL_PK_PARSE_C) && defined(POLARSSL_FS_IO)
 #include <openssl/rsa.h>
+
 #ifndef OPENSSL_NO_ENGINE
 #include <openssl/engine.h>
 #endif
+
 #include <openssl/pem.h>
 #include <openssl/bio.h>
 
@@ -50,6 +49,13 @@
 #include "polarssl/entropy.h"
 #include "polarssl/ctr_drbg.h"
 
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#endif
+
 #if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_RSA_C) ||         \
     !defined(POLARSSL_PK_PARSE_C) || !defined(POLARSSL_FS_IO)
 int main( int argc, char *argv[] )
diff --git a/programs/test/selftest.c b/programs/test/selftest.c
index d2f70d2..edecbb8 100644
--- a/programs/test/selftest.c
+++ b/programs/test/selftest.c
@@ -26,15 +26,6 @@
 #include POLARSSL_CONFIG_FILE
 #endif
 
-#if defined(POLARSSL_PLATFORM_C)
-#include "polarssl/platform.h"
-#else
-#define polarssl_printf     printf
-#endif
-
-#include <string.h>
-#include <stdio.h>
-
 #include "polarssl/entropy.h"
 #include "polarssl/hmac_drbg.h"
 #include "polarssl/ctr_drbg.h"
@@ -62,6 +53,16 @@
 #include "polarssl/ecp.h"
 #include "polarssl/timing.h"
 
+#include <stdio.h>
+#include <string.h>
+
+#if defined(POLARSSL_PLATFORM_C)
+#include "polarssl/platform.h"
+#else
+#include <stdio.h>
+#define polarssl_printf     printf
+#endif
+
 #if defined(POLARSSL_MEMORY_BUFFER_ALLOC_C)
 #include "polarssl/memory_buffer_alloc.h"
 #endif
diff --git a/programs/test/ssl_cert_test.c b/programs/test/ssl_cert_test.c
index 037c474..3e006d3 100644
--- a/programs/test/ssl_cert_test.c
+++ b/programs/test/ssl_cert_test.c
@@ -29,11 +29,24 @@
 #if defined(POLARSSL_PLATFORM_C)
 #include "polarssl/platform.h"
 #else
+#include <stdio.h>
 #define polarssl_printf     printf
 #endif
 
-#include <string.h>
+#if defined(POLARSSL_RSA_C) && defined(POLARSSL_X509_CRT_PARSE_C) &&\
+    defined(POLARSSL_FS_IO) && defined(POLARSSL_X509_CRL_PARSE_C)
+#include "polarssl/certs.h"
+#include "polarssl/x509_crt.h"
+
 #include <stdio.h>
+#include <string.h>
+#endif
+
+#if defined _MSC_VER && !defined snprintf
+#define snprintf _snprintf
+#endif
+
+#define MAX_CLIENT_CERTS    8
 
 #if !defined(POLARSSL_RSA_C) || !defined(POLARSSL_X509_CRT_PARSE_C) || \
     !defined(POLARSSL_FS_IO) || !defined(POLARSSL_X509_CRL_PARSE_C)
@@ -48,17 +61,6 @@
     return( 0 );
 }
 #else
-
-#include "polarssl/certs.h"
-#include "polarssl/x509_crt.h"
-
-#if defined _MSC_VER && !defined snprintf
-#define snprintf _snprintf
-#endif
-
-
-#define MAX_CLIENT_CERTS    8
-
 const char *client_certificates[MAX_CLIENT_CERTS] =
 {
     "client1.crt",
diff --git a/programs/test/ssl_test.c b/programs/test/ssl_test.c
index 63c3220..c414ad0 100644
--- a/programs/test/ssl_test.c
+++ b/programs/test/ssl_test.c
@@ -29,44 +29,33 @@
 #if defined(POLARSSL_PLATFORM_C)
 #include "polarssl/platform.h"
 #else
-#define polarssl_printf     printf
-#define polarssl_fprintf    fprintf
-#define polarssl_malloc     malloc
+#include <stdio.h>
 #define polarssl_free       free
+#define polarssl_malloc     malloc
+#define polarssl_fprintf    fprintf
+#define polarssl_printf     printf
 #endif
 
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-
+#if defined(POLARSSL_BIGNUM_C) && defined(POLARSSL_ENTROPY_C) &&\
+    defined(POLARSSL_SSL_TLS_C) && defined(POLARSSL_SSL_SRV_C) &&\
+    defined(POLARSSL_SSL_CLI_C) && defined(POLARSSL_NET_C) &&\
+    defined(POLARSSL_RSA_C) && defined(POLARSSL_CTR_DRBG_C) &&\
+    defined(POLARSSL_X509_CRT_PARSE_C)
 #include "polarssl/net.h"
 #include "polarssl/ssl.h"
 #include "polarssl/entropy.h"
 #include "polarssl/ctr_drbg.h"
 #include "polarssl/certs.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#endif
+
 #if defined(POLARSSL_TIMING_C)
 #include "polarssl/timing.h"
 #endif
 
-#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_ENTROPY_C) ||  \
-    !defined(POLARSSL_SSL_TLS_C) || !defined(POLARSSL_SSL_SRV_C) || \
-    !defined(POLARSSL_SSL_CLI_C) || !defined(POLARSSL_NET_C) ||     \
-    !defined(POLARSSL_RSA_C) || !defined(POLARSSL_CTR_DRBG_C) ||    \
-    !defined(POLARSSL_X509_CRT_PARSE_C)
-int main( int argc, char *argv[] )
-{
-    ((void) argc);
-    ((void) argv);
-
-    polarssl_printf("POLARSSL_BIGNUM_C and/or POLARSSL_ENTROPY_C and/or "
-           "POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_SRV_C and/or "
-           "POLARSSL_SSL_CLI_C and/or POLARSSL_NET_C and/or "
-           "POLARSSL_RSA_C and/or POLARSSL_CTR_DRBG_C and/or "
-           "POLARSSL_X509_CRT_PARSE_C not defined.\n");
-    return( 0 );
-}
-#else
-
 #define OPMODE_NONE             0
 #define OPMODE_CLIENT           1
 #define OPMODE_SERVER           2
@@ -92,6 +81,24 @@
 #define DFL_SESSION_LIFETIME    86400
 #define DFL_FORCE_CIPHER        0
 
+#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_ENTROPY_C) ||  \
+    !defined(POLARSSL_SSL_TLS_C) || !defined(POLARSSL_SSL_SRV_C) || \
+    !defined(POLARSSL_SSL_CLI_C) || !defined(POLARSSL_NET_C) ||     \
+    !defined(POLARSSL_RSA_C) || !defined(POLARSSL_CTR_DRBG_C) ||    \
+    !defined(POLARSSL_X509_CRT_PARSE_C)
+int main( int argc, char *argv[] )
+{
+    ((void) argc);
+    ((void) argv);
+
+    polarssl_printf("POLARSSL_BIGNUM_C and/or POLARSSL_ENTROPY_C and/or "
+           "POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_SRV_C and/or "
+           "POLARSSL_SSL_CLI_C and/or POLARSSL_NET_C and/or "
+           "POLARSSL_RSA_C and/or POLARSSL_CTR_DRBG_C and/or "
+           "POLARSSL_X509_CRT_PARSE_C not defined.\n");
+    return( 0 );
+}
+#else
 int server_fd = -1;
 
 /*