testsuite/runtests.py (gettestnames): Cleanup

testsuite/runtests.py (gettestnames): Cleanup

Original commit message from CVS:
* testsuite/runtests.py (gettestnames): Cleanup

* testsuite/element.py (FakeSinkTest): Enable again and disable
stderr while changing state to ready
(ElementName.testElementStateGetName): New function to test
gst.element_state_get_name.

* testsuite/common.py (path): Don't import ltihooks and proper
check for gst module. Add --gst-debug-no-color as a global option
(disable_stderr, enable_stderr): New functions to disable stdout
called from non python