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).
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2