update for 13.10, add support for 12.04, drop 13.04

Since the last update, the main source of problems, commit
3e619d04159be54b3daa0b7036b0ce9e067f4b5d, was reverted in upstream
and the revert is present in both 12.04 and 13.10, so I dropped
it here.
The remaining patches address mostly high-bitrate issues,
ie. seeking during 24bit/96KHz playback.