Remove GCC specific flags

--- src/Makefile.am.ORIG	2007-06-11 15:25:13.000000000 +0200
+++ src/Makefile.am	2008-06-25 16:44:47.000000000 +0200
@@ -1,4 +1,3 @@
-AM_CFLAGS = -Wall
 
 include_HEADERS = lua.h lualib.h lauxlib.h
 nodist_include_HEADERS = luaconf.h 

--- src/Makefile.in.ORIG	2007-06-11 16:56:01.000000000 +0200
+++ src/Makefile.in	2008-06-25 16:45:04.000000000 +0200
@@ -193,7 +193,6 @@
 sharedstatedir = @sharedstatedir@
 sysconfdir = @sysconfdir@
 target_alias = @target_alias@
-AM_CFLAGS = -Wall
 include_HEADERS = lua.h lualib.h lauxlib.h
 nodist_include_HEADERS = luaconf.h 
 lib_LTLIBRARIES = liblua.la
