Teletext improvements

Allow users to change key mapping via keymap.xml. As a result of it
volume and mute is working when teletext is visible.

Signed-off-by: Littlesat <littlesat99@yahoo.com>
Subtitle charsets This patch improves teletext subtitleing 1. Selecting charset from pmt data when X/28/0 or X/29/0 triplets are not broadcasted. Lang code is allso cached in higher 5 bits of magazine number Caused by provider Viasat not broadcasting triplets for selecting correct language data for baltic countrys. 2. Cyrillic characters support

Signed-off-by: Littlesat <littlesat99@yahoo.com>
Cosmetic change
Move zoom and screenmode tuxtxt to channel +/- buttons

I suggest this is more logical and all remotes do have a channel +/-
button
Optimize spinner PNGs
Add eventdescription to EventView context menu/further options

Thanks Dima73
Add OpenMP support (picload only for now)

Getting OpenMP in OpenEmbedded was step one. Step two is to actually
use it in Enigma2 code to conveniently run things in parallel. As an
introduction, apply it to the image resizing functions in picload.

Other areas of interest would be initialization code, the EPG search
methods, and the GDI routines (on large enough targets).
Use OK button to get choicebox for selecting in config choiceslist

Usually when you have long config choices list you have to press a lot
of times left/right to select the wished collection. E.g. in satellite
and transponders lists might be long. Now with OK you get a choicebox and
are able to see all posibilities and quicker select the selection you
want.
SatConfig/Setup: Allow OK button to quickly select satellites/transponders

The Green button is to save or start scans. This allows to use the
choicebox as mentioned in the previous commit within these screens
Improve config selection choicebox feature

- change the choicebox from OK button to the FILE/VIDEO button as more
  config menus could be profit from it without making a lot of changes
  over the UI
- solve some GDOD regarding number of variables for handleKey
Solve more possible GSOD for config selection choicebox feature
Bring back OK to Satconfig/Setup

As the config selection choicebox feature is now on the file/video button
Solve some translations issues for config selection choicebox
Cosmetic changes to some Dutch translations
Simplify config selection choicebox feature

With less changes compared to the orriginal code as it was before
Update config screen when selection changed by config choicebox
ScanSetup: Make a difference in the descriptions of MultiSat

Previous there were two Multisat description. Change the by default all
are selected to MultiSat all select.
TimerEntry: Update screen when change made by choicebox
ScanSetup: Reassing OK button to start the scan
Update SoftwareUpdate.py

typo