Add file name/path to caching compiler. Fixes #258 (#278)

Author: mizzao

packages/vue-component/plugin/vue-compiler.js

@@ -126,7 +126,11 @@ VueComponentCompiler = class VueCompo extends CachingCompiler {
 
   getCacheKey(inputFile) {
     let cache = Cache.getCache(inputFile)
-    return inputFile.getSourceHash() + '_' + cache.dependencyManager.lastChangeTime
+    return [
+      inputFile.getSourceHash(),
+      inputFile.getPathInPackage(),
+      cache.dependencyManager.lastChangeTime
+    ]
   }
 
   compileResultSize(compileResult) {

packages/vue-router/plugin/plugin.js

@@ -14,7 +14,10 @@ class VueRouterCompiler extends CachingCompiler  {
   }
 
   getCacheKey(inputFile) {
-    return inputFile.getSourceHash();
+    return [
+      inputFile.getSourceHash(),
+      inputFile.getPathInPackage()
+    ];
   }
 
   compileResultSize(compileResult) {

packages/vue-router2/plugin/plugin.js

@@ -13,7 +13,10 @@ class VueRouterCompiler extends CachingCompiler {
   }
 
   getCacheKey (inputFile) {
-    return inputFile.getSourceHash()
+    return [
+      inputFile.getSourceHash(),
+      inputFile.getPathInPackage()
+    ]
   }
 
   compileResultSize (compileResult) {