MainFrm: remove outdated UNREFERENCED_PARAMETER()
MainFrm: detect popup menu hiding more correctly

It generated false detection on ui preset change
MainFrm: reorder OnFilePostOpenmedia()

Fixes #3753
Resize on EC_VIDEO_SIZE_CHANGED only in MLS_LOADED

Should fix double resize when opening videos
Fix unchecked dynamic_cast warnings

CID 1130727-1130738
InfoBar: fix visual glitch on media change

Relayout() was doing nothing there
MainFrm: call RecalcLayout() where it makes sense

Eliminates visual glitch with InfoBar on media change
Output option page: Fix incorrect tooltip for VMR-9 (renderless).

Fixes CID 966031.
switch statements: Document intentional fall through.

CID 966027, 966028, 966029, 966030, 1109593, 1129656, 1130513, 1130514, 1130739.
Update to astyle v2.04.
Move old changelog entries to Changelog_old.txt.
Use a line break before and after functions.
Fix VS2013/analyze C6001 warnings about using unitialized memory.
Temp