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

ports/alut-demo/alut_hello_world.c

Index: ports/alut-demo/alut_hello_world.c
diff --git a/ports/alut-demo/alut_hello_world.c b/ports/alut-demo/alut_hello_world.c
index 60b46c27369059328c189506f5190e3ae459b6e7..9733793b3799c32b573b502368bc67482f1ad406 100644
--- a/ports/alut-demo/alut_hello_world.c
+++ b/ports/alut-demo/alut_hello_world.c
@@ -2,8 +2,8 @@
 #include <stdio.h>
 #include <AL/alut.h>
 
-#include <ppapi_simple/ps_main.h>
 #include <ppapi/c/ppb.h>
+#include <ppapi_simple/ps.h>
 
 /*
   This is the 'Hello World' program from the ALUT
@@ -14,7 +14,7 @@
 
 void alSetPpapiInfo(PP_Instance instance, PPB_GetInterface get_interface);
 
-int nacl_main(int argc, char** argv) {
+int main(int argc, char** argv) {
   ALuint helloBuffer, helloSource;
 
   /*
@@ -32,5 +32,3 @@ int nacl_main(int argc, char** argv) {
   alutExit();
   return EXIT_SUCCESS;
 }
-
-PPAPI_SIMPLE_REGISTER_MAIN(nacl_main)