DirectoryCache: access and save calls on DirectoryCache after substituting those calls as needed since it does not substitute them anymore
DirectoryCache: The cache keeps track of files and directories and should therefor not be the one to do any substituting.
fixed: add header changes missing in #2045
Merge pull request #2192 from DasMarx/cacheFixes

Cache fixes, e.g. after pathsubstituion
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
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 to buffering
dvdplayer: disable buffering unil dropping is improved
RenderManager: skip very late frames in render buffer
renderbuffers: drop enable/disable in this iteration
RenderManager: add method SetSpeed