Disable tests that require scala-compiler

This is necessary if we ever want to get rid of our dependency on scala-compiler

Author: smarter

compiler/test/dotc/tests.scala

@@ -160,7 +160,6 @@ class tests extends CompilerTest {
 
   @Test def rewrites = compileFile(posScala2Dir, "rewrites", "-rewrite" :: scala2mode)
 
-  @Test def pos_859 = compileFile(posSpecialDir, "i859", scala2mode)(allowDeepSubtypes)
   @Test def pos_t8146a = compileFile(posSpecialDir, "t8146a")(allowDeepSubtypes)
 
   @Test def pos_t5545 = {

tests/neg/selfreq.scala renamed to tests/disabled/neg/selfreq.scala

@@ -0,0 +1,6 @@
+// This test was disabled so that our testsuite
+// does not depend on scala-compiler
+
+class Analyzer {
+  def foo: scala.tools.nsc.Global = ???
+}