Switch from using 'nacl_main' to 'main' entry point

ports/libgit2-demo/libgit2-demo.c

Index: ports/libgit2-demo/libgit2-demo.c
diff --git a/ports/libgit2-demo/libgit2-demo.c b/ports/libgit2-demo/libgit2-demo.c
index 24fb59a7b7a247fa0e4d9a32b94326d5b06bedef..64de7a09c3194308c3e51cff36bb50727692e13a 100644
--- a/ports/libgit2-demo/libgit2-demo.c
+++ b/ports/libgit2-demo/libgit2-demo.c
@@ -9,7 +9,6 @@
 #include <errno.h>
 #include <git2.h>
 #include <git2/transport.h>
-#include <nacl_main.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -130,7 +129,7 @@ git_smart_subtransport_definition pepper_http_subtransport_definition = {
     1 /* use rpc */
 };
 
-int nacl_main(int argc, char** argv) {
+int main(int argc, char** argv) {
   srand(123);
   int rtn = git_threads_init();
   if (rtn) {