stellarium: Update to version 0.12.0

This update fixes the following issues for stellarium:
- Update to version 0.12.0 (bnc#801946):
+ New features:
- New rendering engine (LP: #673183)
- Editable keybindings (LP: #1098851, #1035635, #832256, #789002)
- Scripting for plugins (LP: #1040242)
- Some transneptunian objects (LP: #899084, #1051205)
- New geographical locations (LP: #1051803)
- New textures for DSO
- DeltaT and lunar acceleration computation (LP: #575621)
+ Improvements:
- Improving the scripting engine (LP: #1059368)
- Improving the plugins (LP: #1082167, #1042714)
- Improving the coordinate grids (LP: #1036294)
- Improving the constellation boundaries (LP: #1039072)
- Improving the search tool
+ Bug fixes:
- Clang Wself-assign warning during build process on some platforms (LP: #1097358)
- Bugs in Observability plugin (LP: #1042059, #1054599, #1053058)
- Bugs in TUI plugin (LP: #1083380)
- Bugs in Satellites plugin (LP: #1048220)
- Bugs in Compass plugin (LP: #695891)
- Bugs in scripting engine (LP: #1046518, #1092781)
- Font corruption bugs (LP: #597633, #778747, #819278, #903310)
- Screen flashing in fullscreen mode (LP: #716695, #824788)
- Lost nebula images (LP: #1042393, #1051038)
- Bugs in Night Vision mode (LP: #578367)
- Bugs in GUI and Core (LP: #1090722, #1082510, #1071455, #1071458, #1056868, #1054600, #1045111, #1040944, #1077545)
- Crashes (LP: #1043640, #1044654, #1045783)
- Drop outdated user guide from package, and corresponding .desktop file (the user guide is now on the wiki http://www.stellarium.org/wiki/index.php/Stellarium_User_Guide)
- Drop build dependency on ImageMagick, as the install script now automatically installs prepackaged icons in the hicolor directory
- Require qt >= 4.8 and cmake >= 2.8.7 for building.

Fixed bugs
bnc#801946
Maintenance request for upgrade of stellarium from 0.11.4 to 0.12.0
lp#575621
Delta T and lunar acceleration
lp#578367
All QPushButton icons ignore nightmode
lp#597633
Text is all scrambled or missing on screen.
lp#673183
There isn't the shadow of Saturn on its ring
lp#695891
Labels error in perspective mode w/ CompassMarks
lp#716695
Whole screen wont stop flashing
lp#778747
Further info on Font corruption
lp#789002
Wish for wishlist: Year in seperate digits
lp#819278
Star and planet names are unreadable.
lp#824788
Flicker in fullscreen mode on Macbook with OSX 10.6.8
lp#832256
key bindings years/months
lp#899084
Add some transneptunian objects
lp#903310
Some star labels corrupt
lp#1035635
adding/subtracting 1 "day" based on viewing planet
lp#1036294
Galaptic and ecliptic mount are missing
lp#1039072
Constellation boundaries for non-Western skycultures
lp#1040242
Enable scripting for plugins
lp#1040944
Issues with some labels in certain projection modes
lp#1042059
Observability information display
lp#1042393
Nebula images disappeared after upgrading star catalog (6 of 9)
lp#1042714
Telescope plugin. Enhancement of features
lp#1043640
stellarium-0.11.4 core dump on FreeBSD 9.1-PRERELEASE/amd64, NvidiaGL
lp#1044654
Core dump in StelQGLRenderer
lp#1045111
Mars disappears when zoomed in, sometimes
lp#1045783
Stellarium faild to run in safe mode
lp#1046518
Scripting: script console gives wrong line number for script error
lp#1048220
Search can't find satellites with names starting with letters after N
lp#1051038
No nebula images
lp#1051205
System.ini file is incomplete
lp#1053058
Observability Plug-in overwrites config.ini
lp#1054599
Observability: "THIS YEAR" isn't translated
lp#1054600
Location window enables atmosphere and fog
lp#1056868
Incorrect display of ecliptical geocentric coordinates
lp#1059368
Phase, elongation and distance in SE
lp#1071455
Orbit of Io not shown when selecting Io
lp#1071458
SolarSystemObserver: has atmosphere, fog and ground
lp#1077545
Stellarium 0.12.0dev5 (beta) doesn't show the real lunar phase
lp#1082167
Distribution of exoplanets
lp#1082510
Stellarium automatically selects wrong language
lp#1083380
Light pollution option of TUI don't works correctly
lp#1090722
Program language menu in Configuration window is not correctly sorted
lp#1092781
0.12.0Dev6 Scripts written in UTF are not supported
lp#1097358
Clang Wself-assign warning during build process on some platforms
lp#1098851
desired keyboard feature
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