Accept baselines

Author: sandersn

tests/baselines/reference/es5andes6module.errors.txt

@@ -1,7 +1,7 @@
-error TS1204: Cannot compile modules into 'es6' when targeting 'ES5' or lower.
+error TS1204: Cannot compile modules into 'es2015' when targeting 'ES5' or lower.
 
 
-!!! error TS1204: Cannot compile modules into 'es6' when targeting 'ES5' or lower.
+!!! error TS1204: Cannot compile modules into 'es2015' when targeting 'ES5' or lower.
 ==== tests/cases/compiler/es5andes6module.ts (0 errors) ====
 
     export default class A

tests/baselines/reference/isolatedModulesUnspecifiedModule.errors.txt

@@ -1,6 +1,6 @@
-error TS5047: Option 'isolatedModules' can only be used when either option'--module' is provided or option 'target' is 'ES6' or higher.
+error TS5047: Option 'isolatedModules' can only be used when either option '--module' is provided or option 'target' is 'ES2015' or higher.
 
 
-!!! error TS5047: Option 'isolatedModules' can only be used when either option'--module' is provided or option 'target' is 'ES6' or higher.
+!!! error TS5047: Option 'isolatedModules' can only be used when either option '--module' is provided or option 'target' is 'ES2015' or higher.
 ==== tests/cases/compiler/isolatedModulesUnspecifiedModule.ts (0 errors) ====
     export var x;