[videoinfoscanner] scan the entire subtree of path passed to scanner.

- fixes new files not getting picked up when more than 1 level down.
- fixes hashing never being used when scanning a single directory.
SlingboxLib: Fix alternative CSlingbox constructor

CSlingbox::CSlingbox(const char * szAddress, unsigned int uiPort /* = 5001 */) {
  // Call default constructor
  CSlingbox();
  ...
}

"CSlingbox();" - object is created and immediately removed.
Therefore with CSlingbox(const char * szAddress, unsigned int uiPort /* = 5001 */) class members will not be initialized.
[gui] adds new method GetSelectedItemPath() to CGUIViewControl
[pvr] fix: remember the wrong selected item path if you close the channel osd

If you close the channel osd on a different group than the current playing group without switching to a channel of this group, the wrong selected item path is stored in the global variable. This fix it by setting the proper selected item of the current playing group.
[pvr] use new GetSelectedItemPath() method in CGUIWindowPVRBase
[bluray][files] Add new BlurayFile class.
[release] bump to 14.0 beta1
[pvr] fix unnecessary creation of new CPVRChannel instances
[builtin] fix activatewindow if directory path differs

After #5081 the built-in "activatewindow" does not work if you stay for example in the video window and you want to activate the same window with a different path.
This fixes the issue by comparing the directory path of the current active window with the given directory path of activatewindow.
URIUtils::IsInPath needs to check if the base path isn't empty, fixes texturecache when there is no skin loaded
AML: Send h263 to software decoding sooner

* AMLCodec was handling it prior
https://github.com/xbmc/xbmc/blob/master/xbmc/cores/dvdplayer/DVDCodecs/Video/AMLCodec.cpp#L1225

Signed-off-by: Brandon McAnsh <brandonm@matricom.net>
[osx/preflight] - add allowsharing tag to non-root default sources
[osx/preflight/cosmetics] - fixed identation
Merge pull request #5494 from topfs2/is_in_path_fix
Merge pull request #5478 from Matricom/amlh263fail
Merge pull request #5447 from xhaggi/pvr-fix-wrong-selected-item

[pvr] fix: remember the wrong selected item path if you close the channel osd
Skipped the unnecessary construction of the temporary TimeSmoother for TimeUtils
Merge pull request #5320 from ace20022/blu_files

[bluray][files] Add new BlurayFile.
Merge pull request #5518 from Memphiz/allowsharingdefaultsources

[osx/preflight] - add allowsharing tag to default sources.xml
[vfs] Fix ZipManager, thanks to @notspiff