Merge pull request #3233 from Microsoft/tsconfigBug

Fix issue in the parsing of tsConfig file and fix errors in a couple of test cases when we switched to isolatedModules from separateCompilation.

src/services/shims.ts

@@ -893,7 +893,7 @@ module ts {
                     return {
                         options: configFile.options,
                         files: configFile.fileNames,
-                        errors: [realizeDiagnostics(configFile.errors, '\r\n')]
+                        errors: realizeDiagnostics(configFile.errors, '\r\n')
                     };
                 });
         }

tests/cases/compiler/systemModuleAmbientDeclarations.ts

@@ -1,5 +1,5 @@
 // @module: system
-// @separateCompilation: true
+// @isolatedModules: true
 
 // @filename: file1.ts
 declare class Promise { }

tests/cases/compiler/systemModuleConstEnumsSeparateCompilation.ts

@@ -1,5 +1,5 @@
 // @module: system
-// @separateCompilation: true
+// @isolatedModules: true
 
 declare function use(a: any);
 const enum TopLevelConstEnum { X }

tests/cases/compiler/systemModuleDeclarationMerging.ts

@@ -1,5 +1,5 @@
 // @module: system
-// @separateCompilation: true
+// @isolatedModules: true
 
 export function F() {}
 export module F { var x; }

tests/cases/compiler/systemModuleNonTopLevelModuleMembers.ts

@@ -1,5 +1,5 @@
 // @module: system
-// @separateCompilation: true
+// @isolatedModules: true
 
 export class TopLevelClass {}
 export module TopLevelModule {var v;}