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, 10 insertions, 8 deletions

diff --git a/test/files/neg/t5663-badwarneq.check b/test/files/neg/t5663-badwarneq.check
index 00c2234e9d..12e93ff373 100644
--- a/test/files/neg/t5663-badwarneq.check
+++ b/test/files/neg/t5663-badwarneq.check
@@ -1,22 +1,24 @@
-t5663-badwarneq.scala:42: error: comparing case class values of types Some[Int] and None.type using `==' will always yield false
+t5663-badwarneq.scala:42: warning: comparing case class values of types Some[Int] and None.type using `==' will always yield false
     println(new Some(1) == None) // Should complain on type, was: spuriously complains on fresh object
                         ^
-t5663-badwarneq.scala:43: error: comparing case class values of types Some[Int] and Thing using `==' will always yield false
+t5663-badwarneq.scala:43: warning: comparing case class values of types Some[Int] and Thing using `==' will always yield false
     println(Some(1) == new Thing(1)) // Should complain on type, was: spuriously complains on fresh object
                     ^
-t5663-badwarneq.scala:51: error: ThingOne and Thingy are unrelated: they will most likely never compare equal
+t5663-badwarneq.scala:51: warning: ThingOne and Thingy are unrelated: they will most likely never compare equal
     println(t1 == t2) // true, but apparently unrelated, a compromise warning
                ^
-t5663-badwarneq.scala:52: error: ThingThree and Thingy are unrelated: they will most likely never compare equal
+t5663-badwarneq.scala:52: warning: ThingThree and Thingy are unrelated: they will most likely never compare equal
     println(t4 == t2) // true, complains because ThingThree is final and Thingy not a subclass, stronger claim than unrelated
                ^
-t5663-badwarneq.scala:55: error: comparing case class values of types ThingTwo and Some[Int] using `==' will always yield false
+t5663-badwarneq.scala:55: warning: comparing case class values of types ThingTwo and Some[Int] using `==' will always yield false
     println(t3 == Some(1)) // false, warn on different cases
                ^
-t5663-badwarneq.scala:56: error: comparing values of types ThingOne and Cousin using `==' will always yield false
+t5663-badwarneq.scala:56: warning: comparing values of types ThingOne and Cousin using `==' will always yield false
     println(t1 == c) // should warn
                ^
-t5663-badwarneq.scala:64: error: comparing case class values of types Simple and SimpleSibling.type using `==' will always yield false
+t5663-badwarneq.scala:64: warning: comparing case class values of types Simple and SimpleSibling.type using `==' will always yield false
     println(new Simple() == SimpleSibling) // like Some(1) == None, but needn't be final case
                          ^
-7 errors found
+error: No warnings can be incurred under -Xfatal-warnings.
+7 warnings found
+one error found