Remove file with prefix 'vaapi' in folder 'common' to crated folder 'vaapi'

1.Create folder 'vaapi' and then create Makefile.am

2.Update Makefile.am, configure.am, common/Makefile.am,
  doc/Makefile.am, encoder/Makefile.am
Merge two log head files in 'codecparsers' and 'common'

1.Merge 'codecparsers/log.h' to 'common/log.h'

2.Remove 'checkVaapistatus' in log.h  to vaapiutils.h

3.Replace 'LOG_INFO' to 'INFO', 'LOG_ERROR' to 'ERROR',
 'LOG_WARNING' to 'WARNING' and 'LOG_DEBUG' to 'DEBUG'
When decode nalu, skip SPS Extension NALs and skip Slice Aux NALs
codecparsers: h264: fix derivation of default scaling lists.

When useDefaultScalingMatrixFlag is computed to be 1 while parsing
scaling_list(), then the scaling list shall be inferred to be equal
to the default list (7.4.2.1.1.1). That default list is really one
of Default_4x4_{Intra,Inter} or Default_8x8_{Intra,Inter} and not
one from fall-back rule sets A or B.

This fixes parsing for FRExt1_Panasonic_D, FRExt2_Panasonic_C,
FRExt3_Panasonic_E and FRExt4_Panasonic_B.

https://bugzilla.gnome.org/show_bug.cgi?id=724518

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Signed-off-by: Zhong Cong <congx.zhong@intel.com>