Made -Xfatal-warnings less immediately fatal.

Instead of changing warnings to errors mid-stream, at the end of
a run I check for condition "no errors, some warnings, and fatal
warnings" and then generate an error at that point.  This is
necessary to test for some warnings which come from later stages.

1 files changed, 6 insertions, 4 deletions

diff --git a/test/files/neg/abstract-inaccessible.check b/test/files/neg/abstract-inaccessible.check
index 42b98ac026..d56f5691be 100644
--- a/test/files/neg/abstract-inaccessible.check
+++ b/test/files/neg/abstract-inaccessible.check
@@ -1,13 +1,15 @@
-abstract-inaccessible.scala:5: error: method implementMe in trait YourTrait references private[foo] trait Bippy.
+abstract-inaccessible.scala:5: warning: method implementMe in trait YourTrait references private[foo] trait Bippy.
 Classes which cannot access Bippy may be unable to provide a concrete implementation of implementMe.
     def implementMe(f: Int => (String, Bippy)): Unit
         ^
-abstract-inaccessible.scala:6: error: method overrideMe in trait YourTrait references private[foo] trait Bippy.
+abstract-inaccessible.scala:6: warning: method overrideMe in trait YourTrait references private[foo] trait Bippy.
 Classes which cannot access Bippy may be unable to override overrideMe.
     def overrideMe[T <: Bippy](x: T): T = x
         ^
-abstract-inaccessible.scala:7: error: method overrideMeAlso in trait YourTrait references private[foo] trait Bippy.
+abstract-inaccessible.scala:7: warning: method overrideMeAlso in trait YourTrait references private[foo] trait Bippy.
 Classes which cannot access Bippy may be unable to override overrideMeAlso.
     def overrideMeAlso(x: Map[Int, Set[Bippy]]) = 5
         ^
-three errors found
+error: No warnings can be incurred under -Xfatal-warnings.
+three warnings found
+one error found