Rename net.{c,h} to net_sockets.{c,h}

The library/net.c and its corresponding include/mbedtls/net.h file are
renamed to library/net_sockets.c and include/mbedtls/net_sockets.h
respectively. This is to avoid naming collisions in projects which also
have files with the common name 'net'.

programs/ssl/dtls_client.c

@@ -51,7 +51,7 @@ int main( void )
 
 #include <string.h>
 
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/debug.h"
 #include "mbedtls/ssl.h"
 #include "mbedtls/entropy.h"

programs/ssl/dtls_server.c

@@ -67,7 +67,7 @@ int main( void )
 #include "mbedtls/x509.h"
 #include "mbedtls/ssl.h"
 #include "mbedtls/ssl_cookie.h"
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/error.h"
 #include "mbedtls/debug.h"
 #include "mbedtls/timing.h"

programs/ssl/mini_client.c

@@ -68,7 +68,7 @@ int main( void )
 
 #include <string.h>
 
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/ssl.h"
 #include "mbedtls/entropy.h"
 #include "mbedtls/ctr_drbg.h"

programs/ssl/ssl_client1.c

@@ -52,7 +52,7 @@ int main( void )
 }
 #else
 
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/debug.h"
 #include "mbedtls/ssl.h"
 #include "mbedtls/entropy.h"

programs/ssl/ssl_client2.c

@@ -49,7 +49,7 @@ int main( void )
 }
 #else
 
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/ssl.h"
 #include "mbedtls/entropy.h"
 #include "mbedtls/ctr_drbg.h"

programs/ssl/ssl_fork_server.c

@@ -66,7 +66,7 @@ int main( void )
 #include "mbedtls/certs.h"
 #include "mbedtls/x509.h"
 #include "mbedtls/ssl.h"
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/timing.h"
 
 #include <string.h>

programs/ssl/ssl_mail_client.c

@@ -54,7 +54,7 @@ int main( void )
 
 #include "mbedtls/base64.h"
 #include "mbedtls/error.h"
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/ssl.h"
 #include "mbedtls/entropy.h"
 #include "mbedtls/ctr_drbg.h"

programs/ssl/ssl_pthread_server.c

@@ -66,7 +66,7 @@ int main( void )
 #include "mbedtls/certs.h"
 #include "mbedtls/x509.h"
 #include "mbedtls/ssl.h"
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/error.h"
 
 #if defined(MBEDTLS_SSL_CACHE_C)

programs/ssl/ssl_server.c

@@ -65,7 +65,7 @@ int main( void )
 #include "mbedtls/certs.h"
 #include "mbedtls/x509.h"
 #include "mbedtls/ssl.h"
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/error.h"
 #include "mbedtls/debug.h"
 

programs/ssl/ssl_server2.c

@@ -50,7 +50,7 @@ int main( void )
 }
 #else
 
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/ssl.h"
 #include "mbedtls/entropy.h"
 #include "mbedtls/ctr_drbg.h"