Pass CC to lua make, fixes building on (open-)solaris

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8426 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/languages/mod_lua/Makefile

@@ -11,7 +11,7 @@ include $(BASE)/build/modmake.rules
 local_depend: $(LOCAL_OBJS)
 
 $(LIBLUA_A):
-	cd lua && $(MAKE) CFLAGS="$(ALL_CFLAGS) -DLUA_USE_LINUX -w" liblua.a
+	cd lua && $(MAKE) CC="$(CC)" CFLAGS="$(ALL_CFLAGS) -DLUA_USE_LINUX -w" liblua.a
 
 luaclean:
 	cd lua && $(MAKE) clean