loader/efi: Use unique linker set for lua

After the linker set cleanup in ldscripts, there's now only one place we
need to know the linkerset name, so go ahead and change the lua
interpreter augmentation linker set to be uniquely named.

Sponsored by:		Netflix
Reviewed by:		tsoome, kevans
Differential Revision:	https://reviews.freebsd.org/D44062

stand/efi/loader/Makefile

@@ -117,7 +117,7 @@ ${LOADER}.efi: ${PROG}
 	${OBJCOPY} -j .peheader -j .text -j .sdata -j .data \
 		-j .dynamic -j .dynsym -j .rel.dyn \
 		-j .rela.dyn -j .reloc -j .eh_frame -j set_Xcommand_set \
-		-j set_Xficl_compile_set \
+		-j set_Xficl_compile_set -j set_Xlua_compile_set \
 		--output-target=${EFI_TARGET} ${.ALLSRC} ${.TARGET}
 
 LIBEFI=		${BOOTOBJ}/efi/libefi/libefi.a

stand/liblua/lutils.h

@@ -34,8 +34,9 @@ int	luaopen_pager(lua_State *);
 #include <sys/linker_set.h>
 
 typedef void lua_init_md_t(lua_State *);
+#define _LUA_COMPIE_SET Xlua_compile_set
 #define LUA_COMPILE_SET(func)	\
-	DATA_SET(Xficl_compile_set, func)	/* XXX linker set know by ldscrips */
+	DATA_SET(_LUA_COMPILE_SET, func)
 #define LUA_FOREACH_SET(s) \
-	SET_FOREACH((s), Xficl_compile_set)
-SET_DECLARE(Xficl_compile_set, lua_init_md_t);
+	SET_FOREACH((s), _LUA_COMPILE_SET)
+SET_DECLARE(_LUA_COMPILE_SET, lua_init_md_t);