[Libva] [ANNOUNCE] libva-1.3.1.pre1

[Xiang, Haihao]

Hi, all

libva-1.3.1 is planned for release soon.  Please report any critical
issue with 

http://www.freedesktop.org/software/vaapi/testing/libva/libva-1.3.1.pre1.tar.bz2

* API: fix VA_ENC_PACKED_HEADER_RAW_DATA value
* API: add STE filter to the VPP pipeline
* Update doxygen tags in libva
* Fix doc/Makefile.am
* A workaround for https://bugs.freedesktop.org/show_bug.cgi?id=76755 in
case user still uses older version xorg-server

Thanks
Haihao