Bug 1146267: Define XP_DARWIN as appropriate in js/src stand-alone builds. r=sfink

--HG--
extra : rebase_source : 0ecd1f65aa210c4a692d852859ed81951b514b90

js/src/configure.in

@@ -1564,6 +1564,7 @@ case "$target" in
     ;;
 
 *-darwin*)
+    AC_DEFINE(XP_DARWIN)
     MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
     MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
     MOZ_OPTIMIZE_FLAGS="-O3 -fno-stack-protector"