- Make lua respect CFLAGS= defined on /etc/make.conf and still plus -fPIC on

necessary archs.
- Remove unecessary dependency gmake
- Bump PORTREVISION because of gmake removal

Thanks to:	johans@

lang/lua/Makefile

@@ -7,7 +7,7 @@
 
 PORTNAME=	lua
 PORTVERSION=	5.1.4
-PORTREVISION=	3
+PORTREVISION=	4
 CATEGORIES=	lang
 MASTER_SITES=	http://www.lua.org/ftp/ \
 		ftp://ftp.tecgraf.puc-rio.br/pub/lua/ \
@@ -30,7 +30,7 @@ USE_GNOME=	pkgconfig
 USE_LDCONFIG=	yes
 MAKE_JOBS_SAFE=	yes
 MAKE_ENV=	LUA_SONAME="liblua-${LUA_VER}.so.${LUA_VER_SH}"
-USE_GMAKE=	yes
+MAKE_ARGS=	CFLAGS="${CFLAGS}"
 
 MAN1=		lua-${LUA_VER}.1 luac-${LUA_VER}.1
 DOCSDIR=	${PREFIX}/share/doc/${LUA_SUBDIR}