Use a QDoubleSpinBox instead of a QLineEdit for the snapping
 tolerance, make the treeview columns adjust better to the size of the
 contents
Use GEOS reentrant API (_r functions) and update requirement to GEOS >= 3.1.0

Currently QGIS uses the 'classic' GEOS API that uses a global context.
This can conflict with libraries that would also use the global context
and potentially finalize it whereas QGIS will still use it later.

See https://groups.google.com/forum/#!topic/spatialite-users/9YSU6c5AVQ4 for
such an example of such a recent issue with Spatialite.

The _r API is available since GEOS 3.1.0, which is already an ancient GEOS
version. For example, old-old-stable Ubuntu (Lucid 10.04) and Debian (squeeze)
ship with GEOS 3.1.0 or later.

Such move has also been done in GDAL 1.11
(http://lists.osgeo.org/pipermail/gdal-dev/2013-August/036877.html)
and MapServer 7.0 (https://github.com/mapserver/mapserver/issues/4733)

There's no easy way unfortunately to check at compile time that you don't
use the non _r API. I have patched my geos_c.h header to #ifdef that API (quite
painfull to do..). A postprocessing check can be done however with :

objdump -T output/lib/*.so | grep -v Base | grep GEOS | grep -v _r | grep -v "_ZN" | grep -v GEOSversion

It should return nothing.
Fixing field name used for target field in ftools DistanceMatrix algorithm
Fixing several errors in generation of NxT distance matrix
Fix multilabeling with datadefined value
Mapserver: enhancements of searching with GetFeatureInfo request
Fix margins for expressionbuilder on gnome
Add set of default colors for custom color palette
Add method for editing color scheme colors
Add method for finding matching schemes from a color scheme registry
New GUI control for an editable list of colors from a color scheme.
Supports drag and drop reordering, drag and drop colors from external
apps (on supported OS).
[FEATURE] Project specific color scheme, set through default styles tab in project properties
fix windows build
indentation update
german translation update
[TRANSUP] next update transifex and source

Signed-off-by: Werner Macho <werner.macho@gmail.com>
revert german part of 62200eb55
Support dropping multiple colors into a color list widget
Improvements to color list:
- Cleanup code
- Support copying and pasting multiple colors to list
- Support additional color list mime formats
Allow importing and exporting to GIMP palette file (gpl) from color list