Log Message:
Update to libXv-1.0.5. Changes:

Add README with pointers to mailing list, bugzilla & git repos
Adjust flags definitions to fix lint library build
Move xv-library-v2.2.txt document from xorg-docs
Man page cleanups and formatting fixes
Convert documentation from xv-library-v2.2.txt into man pages
Migrate to xorg macros 1.3 & XORG_DEFAULT_OPTIONS
libXv 1.0.5
Janitor: make distcheck, compiler warnings, .gitignore.