Added SSL for MySQL connections.
GUIRadioButton: add separate textures for radio image for focus/unfocus states
[Linux] os-release: unescape quotes / backslashes
The os-release specification states that single quotes, double quotes
and backslashes are supposed to be escaped with \. Unfortunately
I missed this in my original commit 7a9aa6f5d9ac8df1c79eb06ed63bce8af162c3ba.

http://www.freedesktop.org/software/systemd/man/os-release.html
Expose ACTION_FOO, ICON_TYPE_FOO and KEY_CODE_FOO to addons
Added JSONRPC.NotifyAll as a built-in function
Use album artist fanart when there is no artist fanart

This is useful especially for albums that are by one main artist but
have some songs featuring other artists, so there may be fanart for "A"
but not "A feat. B".
fixed: compile with old versions of libdbus that don't have DBUS_TYPE_UNIX_FD defined
added: setting to disable keyboard grabbing when in fullscreen on platforms that use SDL on X11, calls SDL_WM_GrabInput(SDL_GRAB_OFF) with the SDL_FULLSCREEN temporarily zero'd, this will make SDL call XUnGrabPointer and XUnGrabKeyboard, allowing window manager keys like printscreen, volume and alt-tab to work
[LangInfo] Use preferred audio/subtitle language also for dvds and blurays.
[LangInfo] Use gui's language for dvd/bluray menus.
[rbp] Add streamsilence option for hdmi

This adds a (mostly) dummy audio engine for Pi which supports drain allowing the
stream silence gui option to appear.
The OnSettingsChange callback enables or disables the stream silence on the GPU.

Enabling this keeps the receiver awake, and avoids losing the first couple of
seconds of audio at start of playback.
Requires updated firmware.
changed: Don't allow change of volume amplification with passthrough audio
Fix make check compilation.

TestRarFile: StringUtils::EndsWith no longer takes a third parameter
TestCharsetConverter: CCharsetConverter::subtilteCharsetToW's first
parameter cannot be a std::wstring, ::stringCharsetToUtf8 renamed to
::ToUtf8
TestJobManager: CJobManager::IsPaused renamed to IsProcessing with reverse
effect, s/UnPause/UnPauseJobs. Only PRIORITY_LOW_PAUSABLE jobs can be paused.

 There is a race condition upon calling IsProcessing for the first time
 after AddJob is called - the job may not have been started yet and not
 added to the processing list. As such, the test implements a custom CJob
 that allows the calling thread to block until the job has started processing
 such that IsProcessing can be checked in a deterministic way.

 CancelJobs effectively renders CJobManager useless after it is called,
 because m_running is set to false. A new member "Restart" was added to
 set this variable back to true when appropriate.

 IsProcessing should have returned false when jobs were paused.

TestSortUtils: SortItems is now a std::vector<boost::shared_ptr<SortItem>> not
an std::vector<SortItem>
TestStreamDetails: Aspect ratio 2.39 is now within the 2.37 - 2.47 range and
as such snaps to 2.40
Merge pull request #3376 from smspillaz/fix-tests-04102013

Fix make check compilation.
settings: fix updating skin-related settings spinners
properly reset skin-related settings after changing the current skin (fixes #14595)
smartplaylists: use simple WHERE conditions instead of expensive IN statements
smartplaylists: cosmetics in SQL queries
smartplaylists: use SELECT DISTINCT in SQL sub-queries
smartplaylists: replace SQL IN with SQL EXISTS in WHERE conditions