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

ports/make/nacl.patch

Index: ports/make/nacl.patch
diff --git a/ports/make/nacl.patch b/ports/make/nacl.patch
index dd4bcfb9745cf7c36fb5b1843ede0fc4f2c91577..93d23005bb58a557737a73acfb06f92ec3166166 100644
--- a/ports/make/nacl.patch
+++ b/ports/make/nacl.patch
@@ -15,22 +15,12 @@ diff --git a/job.c b/job.c
 diff --git a/main.c b/main.c
 --- a/main.c
 +++ b/main.c
-@@ -911,6 +911,9 @@ open_tmpfile(char **name, const char *template)
- #ifdef _AMIGA
- int
- main (int argc, char **argv)
-+#elif defined(__native_client__)
-+int
-+nacl_main (int argc, char **argv)
- #else
- int
- main (int argc, char **argv, char **envp)
 @@ -921,6 +924,9 @@ main (int argc, char **argv, char **envp)
    struct dep *read_makefiles;
    PATH_VAR (current_directory);
    unsigned int restarts = 0;
 +#if defined(__native_client__)
-+  char **envp = environ;
++  envp = environ;
 +#endif
  #ifdef WINDOWS32
    char *unix_path = NULL;