SI-7003 Partest redirects stderr to log file

Some scalac output is on stderr, and it's useful to see that
in the log file, especially for debugging.

Adds a line filter for logs, specified as "filter: pattern"
in the test source.

Backslashes are made forward only when detected as paths.

Test alignments:

Deprecations which do not pertain to the system under test
are corrected in the obvious way.

When testing deprecated API, suppress warnings by deprecating
the Test object.

Check files are updated with useful true warnings, instead of
running under -nowarn.

Language feature imports as required, instead of running under -language.

Language feature not required, such as casual use of postfix.

Heed useful warning.

Ignore broken warnings. (Rarely, -nowarn.)

Inliner warnings pop up under -optimise only, so for now, just
filter them out where they occur.

Debug output from the test required an update.

1 files changed, 6 insertions, 2 deletions

diff --git a/test/files/run/ctries-old/main.scala b/test/files/run/ctries-old/main.scala
index 78ba7f0db1..f714bcdcdc 100644
--- a/test/files/run/ctries-old/main.scala
+++ b/test/files/run/ctries-old/main.scala
@@ -5,6 +5,7 @@
 
 
 
+@deprecated("Suppress warnings", since="2.11")
 object Test {
 
   def main(args: Array[String]) {
@@ -14,11 +15,13 @@ object Test {
     SnapshotSpec.test()
   }
 
-}
 
 
 trait Spec {
 
+  implicit def implicitously = scala.language.implicitConversions
+  implicit def reflectively  = scala.language.reflectiveCalls
+
   implicit def str2ops(s: String) = new {
     def in[U](body: =>U) {
       // just execute body
@@ -35,7 +38,7 @@ trait Spec {
       var produced = false
       try body
       catch {
-        case e => if (e.getClass == implicitly[ClassManifest[T]].erasure) produced = true
+        case e: Throwable => if (e.getClass == implicitly[ClassManifest[T]].erasure) produced = true
       } finally {
         assert(produced, "Did not produce exception of type: " + implicitly[ClassManifest[T]])
       }
@@ -43,3 +46,4 @@ trait Spec {
   }
 
 }
+}