RunScript: execute even if addon isn't a script type addon

..for backwards compatibility. Deprecate and warn about this behaviour instead.
log when RunAddon is called with invalid addon id/type and no addon will be started
[skininfo] fix uninitialized members in CSkinsInfo constructor

Fixes coverity CID 719106
[pvr] fix possible resource leak in channels osd dialog

Fixes coverity CID 1223318
[pvr] fix uninitialized members in CPVRGUIInfo constructor

Fixes coverity CID 1228840
[settings] fix possible null ptr dereference in CGUIDialogSettingsBase::SetupControls

Fixes coverity CID 1215664
[paplayer] fix possible resource leak in QueueNextFileEx

Fixes coverity CID 1126041
[cpuinfo] fix possible divide-by-zero

Fixes coverity CID 1238515
[nfsfile] fix arg type mismatch

Fixes coverity CID 1250595
[rendermanager] fix possible null ptr dereference in CXBMCRenderManager::GetOptimalBufferSize()

Fixes coverity CID 1243594
[vaapi] fix missing break in switch
FIX: must return true after setting update
Merge pull request #5663 from tamland/runscript-bc

Add RunScript backwards compatibility
Merge pull request #5667 from mkortstiege/coverity

coverity fixes
Merge pull request #5691 from koying/fixupdatesetting

FIX: must return true after setting update
Merge branch 'master' of https://github.com/xbmc/xbmc