[rbp/omxplayer] Fix leak when playing multiple files from playlist

When omxplayer plays a second file from a playlist (i.e. without being shut down) a clock component gets leaked.
Eventually enough of these leaked components will stop further playback
[rbp/omxplayer] Cosmetic: Remove option to deinit a component without freeing it

We always free a component when deiniting, so remove the option to avoid a way of leaking resources
[rbp/omplayer] Cosmetic: Remove redundant conditional code

We are avoiding disabling ports when creating clock component, then immediately disabling ports...
[rbp/omxplayer] Cosmetic: Remove unused portSettingsChanged parameter from tunnel establish
[rbp] Fix bug with CPicture::CreateTiledThumb and texture pipeline

The decode to texture pipeline results in the decoded pixels not being available to xbmc.
The pixels are required for CPicture::CreateTiledThumb, so provide an extra parameter to request that
VideoRenerers: add buffering
add buffering for GLES
WinRenderer: add buffering
DXVA: activate buffering in renderer
linuxrenderer: delete all textures on reconfigure
drop frame counter in application, ask render manager instead
vaapi: adopt to buffering in renderer
add buffering - some documentation
RenderManager: only flip free buffer if player has added something
move NUM_BUFFERS up to BaseRenderer.h
OverlayRenderer: align buffers with index in renderManager
add buffering - submit absolute time to render buffers
RenderManager: some rework, squash add buffering
dvdplayer: disable buffering unil dropping is improved
RenderManager: skip very late frames in render buffer