StringUtils::Split: fix processing empty delimiter
Extend test for StringUtils::Split()
StringUtils::Split: optimize
StringUtils::Split: add overload with single char as delimiter
Add tests for StringUtils::Split() overload
Use new overload of StringUtils::Split()
StringUtils::Tokenize: add overload with char as delimiter and use it
Fix incorrect usage of S_IFDIR flag
Fix wrongly used CFile::Exists() for directories instead of CDirectory::Exists()
Currently it can cause hardly detectable errors as some VFS don't return true when directory is requested for CFile. One of VFS of such kind is Win32File.
[release] bump to 14.0 alpha5
[pvr] fix deviations of selected item between PVR windows and channel OSD

As discussed in our forum (http://forum.xbmc.org/showthread.php?tid=175135&pid=1795411#pid1795411) this fix the deviations of the selected item between the PVR windows and the channel osd.

I also changed the way the current playing channel is used for the selected item. It's only used if we never have valid selected item or if we switch the channel otherwise we use the stored selected item. Thanks Jönke for this suggestion.
[pvr] cosmetics: correct wrong code format
[win32][vfs] Add CWin32SMBFile class for files on SMB shares for win32
[win32][vfs] FileFactory: switch to new implementation of Win32SMBFile
[win32] Remove old WINFileSMB and WINSMBDirectory
pvr: fix deadlock in TriggerEPGUpdate
[pvr] fix backend info never gets updated when only one pvr client enabled
[pvr] add ability to show free/used disk space of backend
Merge pull request #5401 from xhaggi/pvr-fix-sync-selected-item

[pvr] fix deviations of selected item between PVR windows and channel OSD
[confluence] add pvr disk indicator in recordings view