Remove vaapi* in common to crated folder vaapi, merge two log.h in codecparsers and common

1.Create folder 'vaapi' and then create Makefile.am

2.Update Makefile.am, configure.am, common/Makefile.am,
  doc/Makefile.am, encoder/Makefile.am

3.Merge 'codecparsers/log.h' to 'common/log.h'

4.Remove 'checkVaapistatus' in log.h  to vaapiutils.h

5.Replace 'LOG_INFO' to 'INFO', 'LOG_ERROR' to 'ERROR',
 'LOG_WARNING' to 'WARNING' and 'LOG_DEBUG' to 'DEBUG'