Respect results of WOA.
Added: HttpProxy parameter for setting proxies on stream urls.
[pvr] fix view mode not being set properly after channel switch under certain
circumstances
[pvr] Fix missing recordings

This fixes an issue with missing recordings that occurs under following
circumstances:

- Recording A in subdirectory "TV Show XY"
- Recording B in subdirectory "TV show xy"

Because of the difference in case, recording B won't show up in any
sub folder. This can happen due to EPG inconsistencies.

The presented sub folders are created with case-insensitive matching
using CFileItemList::Contains in GetSubDirectories.
But when determining if a recording belongs into a directory, the
comparison is case-sensitive (in IsDirectoryMember).

This commit changes the IsDirecroryMember check to be case-insensitive.
[rbp/omxplayer] Avoid segfault when switching fullscreen

Switching fullscreen causes a brief UnregisterAudioCallback/RegsisterAudioCallback.
If this occurs while audio thread is inside VizPacket then we segfault on dereferencing m_pCallback.

Using the m_critSection lock means the higher level test for m_pCallback will protect us.
[pvr] support for past epg data in timeline view
[epg] fix: incorrect return value in GetSelectedItem()
[pvr] fix: remove wrong condition in ActionPlayEpg()
removed ambiguous m_file in CachingCodec.h
[pvr] improve implementation of OnClickList() method

* use switch case instead of if else
* use IsActive() to determine if playing the selected item
[pvr] remove unnecessary method PlayEpgItem() and use ActionPlayEpg()
instead
IPlayer: let player know on close if it will be reopened
paplayer: instruct AE to keep configuration when skipping tracks
AE: add interface method KeepConfiguration
[pvr] fix memory leak in QueueJob() when the job is not actually
queued
[pvr] remove redundant job name parameter from QueueJob() (it can
be deduced from the job itself)
[pvr] remove unused parameter
ActiveAE: fix port comparison  in state machine
[rbp] Disable frame multi threaded decoded settings option

Makes no sense on Pi
[rbp] Ensure resolution infos have unique names

Currently the strMode for 2D and 3D resolutions have the same name.
This means the calibration info for a 2D mode can get replaced with a 3D mode
which can result in the pixel aspect ratio being reset to 0.5.

Also when using gui resolution clamping (i.e. 720p gui on 1080p display)
the calibration settings are scaled to gui resolution, but there is no indictation
of what the clamped resolution was when the settings were saved.

This means disabling gui clamping results in a minature gui.
(And I'd like to remove the gui clamping in the future).

Make sure all these resolutions have unique names by adding the gui resolution
and 3DSBS/3DTB to the resolution string.

Note: this will result in current calibration settings being lost.