Enable getLocalIdent in global options

This will fix webpack-contrib#389

Author: hh9527

lib/processCss.js

@@ -140,7 +140,9 @@ module.exports = function processCss(inputSource, inputMap, options, callback) {
 	var forceMinimize = query.minimize;
 	var minimize = typeof forceMinimize !== "undefined" ? !!forceMinimize : options.minimize;
 
-	var customGetLocalIdent = query.getLocalIdent || getLocalIdent;
+	var customGetLocalIdent = query.getLocalIdent ||
+		(options.loaderContext.options.css && options.loaderContext.options.css.getLocalIdent) ||
+		getLocalIdent;
 
 	var parserOptions = {
 		root: root,