In verbose mode, display the name of each file before trying to compile

it.  Else when this fails, there's no way to tell which file it was
chewing on.

Lib/test/test_compiler.py

@@ -18,7 +18,10 @@ class CompilerTest(unittest.TestCase):
             for path in os.listdir(dir):
                 if not path.endswith(".py"):
                     continue
-                f = open(os.path.join(dir, path), "r")
+                fpath = os.path.join(dir, path)
+                if test.test_support.verbose:
+                    print "compiling", fpath
+                f = open(fpath)
                 buf = f.read()
                 f.close()
                 compiler.compile(buf, path, "exec")