Ensure UNSUPPORTED tests in tree-prof do not report absolute paths.

The test infrastructure for gcc.dg/tree-prof reports relative paths
for all test outcomes except UNSUPPORTED, for which it reports the
absolute path of the test case.  This patch ensure a relative path is
reported consistently reducing noise in regression test comparisons.

From-SVN: r208514

gcc/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2014-03-12  Marcus Shawcroft  <marcus.shawcroft@arm.com>
+
+	* lib/profopt.exp (profopt-execute): Use $testcase in
+	unsupported.
+
 2014-03-12  Jakub Jelinek  <jakub@redhat.com>
 
 	* gcc.dg/tree-ssa/ssa-ifcombine-12.c: New test.

gcc/testsuite/lib/profopt.exp

@@ -277,7 +277,7 @@ proc profopt-execute { src } {
 	set dg-do-what [list "run" "" P]
 	set extra_flags [profopt-get-options $src]
 	if { [lindex ${dg-do-what} 1 ] == "N" } {
-	    unsupported "$src"
+	    unsupported "$testcase"
 	    unset testname_with_flags
 	    verbose "$src not supported on this target, skipping it" 3
 	    return