Closed #1758: use OpenH264 lib version 1.0.0 release instead of the latest git version which is still changing

git-svn-id: http://svn.pjsip.org/repos/pjproject@4873 74dad513-b988-da41-8d7b-12977e46ad98
Re #1758: misc: reverted accidentally checked in test.h

git-svn-id: http://svn.pjsip.org/repos/pjproject@4874 74dad513-b988-da41-8d7b-12977e46ad98