Remove unused file (support/lib.mk)
Fix ccache for rpi
Fix some broken locking surrounding video overlays
glw: Refactor some shared code between RSX and OpenGL video driver
Move AV-diff related stuff from video_decoder to glw_video_common
settings: Refactor code for setting up settings:dev
playback: Also increase epoch when we seek by dropping packets from queue
Improve A/V Syncing.

In particular make sure we reach A/V sync faster after seeking
Build zlib with -j4
rpi: Fix broken libav build (didn't find zlib)
xmp: Set duration