Move rewrite tests to special directory

Author: liufengyun

compiler/test/dotty/tools/dotc/CompilationTests.scala

@@ -71,8 +71,8 @@ class CompilationTests extends ParallelTesting {
     implicit val testGroup: TestGroup = TestGroup("rewrites")
 
     aggregateTests(
-      compileFile("tests/pos-scala2/rewrites.scala", scala2CompatMode.and("-rewrite")),
-      compileFile("tests/pos/i8982.scala", defaultOptions.and("-indent").and("-rewrite"))
+      compileFile("tests/rewrites/rewrites.scala", scala2CompatMode.and("-rewrite")),
+      compileFile("tests/rewrites/i8982.scala", defaultOptions.and("-indent").and("-rewrite"))
     ).checkRewrites()
   }
 

compiler/test/dotty/tools/vulpix/ParallelTesting.scala

@@ -869,7 +869,7 @@ trait ParallelTesting extends RunnerOrchestration { self =>
     def checkCompile()(implicit summaryReport: SummaryReporting): this.type = {
       val test = new PosTest(targets, times, threadLimit, shouldFail || shouldSuppressOutput).executeTestSuite()
 
-      cleanup()
+      // cleanup()
 
       if (!shouldFail && test.didFail) {
         fail(s"Expected no errors when compiling, failed for the following reason(s):\n${ reasonsForFailure(test) }")