Skip transition on non-global capture device source

Skip the transition if there's a non-global capture device source in the
next scene. Mainly a fix to make device capture sources using the same
device as one in the previous scene not show up blank after switching.
Fixed typo in QSV encoder height check
Extend QSV resolution check for Ivy Bridge
Improve DTS handling for QSV encoder

Improves audio delay/sync
Lock scene mutex when reconfiguring global sources
Fixed frame_ticks calculation and added bounds check for init_pts
Log bframe_delay adjustments and lower bframe_delay instead of crashing
Added ability to use input devices for desktop audio, added a 'point filtering' option to text output source
Merge branch 'master' of https://github.com/jp9000/OBS
Destroy shader cache when changing video adapter
Sanitized shader cache handling

Store blobs per graphics adapter (name) and only delete corrupted cache
files (instead of nuking "all" cache files while ignoring plugin cache
files from third party plugins).
Also log corrupted cache files
Revert "Sanitized shader cache handling"

This reverts commit 6857c19ba7fe6f3ee7e495433d65171243c7eb50.
Delete all files in shader cache

Selective deletion doesn't work due to silent corruption in the cache files
which isn't detected when loading the blob