tests/check/: Add simple unit test for oggmux from #337026 with checking for the

tests/check/: Add simple unit test for oggmux from #337026 with checking for the

Original commit message from CVS:
Patch by: James Livingston  <doclivingston at gmail.com>
* tests/check/Makefile.am:
* tests/check/pipelines/.cvsignore:
* tests/check/pipelines/oggmux.c: (get_page_codec),
(check_chain_final_state), (fail_if_audio), (validate_ogg_page),
(eos_buffer_probe), (start_pipeline), (stop_pipeline), (eos_watch),
(test_pipeline), (test_vorbis), (test_theora), (test_vorbis_theora),
(test_theora_vorbis), (oggmux_suite):
Add simple unit test for oggmux from #337026 with checking for the
EOS flags disabled for the time being.