Make test_support.TestSkipped errors work the same way as ImportErrors:

mark the test as 'skipped', rather than 'failed'.

Lib/test/regrtest.py

@@ -227,7 +227,7 @@ def runtest(test, generate, verbose, testdir = None):
                 cfp.close()
         finally:
             sys.stdout = save_stdout
-    except ImportError, msg:
+    except (ImportError, test_support.TestSkipped), msg:
         return -1
     except KeyboardInterrupt, v:
         raise KeyboardInterrupt, v, sys.exc_info()[2]