Update libuv.

Author: graydon

.gitmodules

@@ -3,4 +3,4 @@
 	url = git://github.com/brson/llvm.git
 [submodule "src/libuv"]
 	path = src/libuv
-	url = git://github.com/joyent/libuv
+	url = git://github.com/graydon/libuv.git

configure

@@ -467,6 +467,8 @@ cd ${CFG_SRC_DIR}
 
 if [ -z $CFG_DISABLE_MANAGE_SUBMODULES ]
 then
+msg "git: submodule sync"
+"${CFG_GIT}" submodule sync --quiet
 SUBMODULE_STATUS=$("${CFG_GIT}" submodule status)
 NEED_INIT_COUNT=$(echo "$SUBMODULE_STATUS" | grep -c "^-")
 NEED_UPDATE_COUNT=$(echo "$SUBMODULE_STATUS" | grep -c "^+")