Merge remote-tracking branch 'remotes/origin/master' into MP1-4307-BUG-fontEngine_crash_trigger_by_thirdparty_plugins_using_direct_call_in_GUITextureManager

Conflicts:
	mediaportal/Core/guilib/GUITextureManager.cs
MP1-4307 : Fix background mediaportal.exe process on close.
Merge remote-tracking branch 'remotes/upstream/MP1-4307-BUG-fontEngine_crash_trigger_by_thirdparty_plugins_using_direct_call_in_GUITextureManager' into 1.6.0Fork-BDJ

Conflicts:
	DirectShowFilters/fontEngine/source/fontEngine.cpp
	mediaportal/MediaPortal.Application/MediaPortal.cs