[Ubuntu] Adding saga 2.1.0 to ubuntugis

[Johan Van de Wauw]

Hello,

I would like to add saga 2.1.0 to ubuntugis. This would solve the
problem for those users who would like to run qgis 2.0 with the last
version of saga (which actually is a bug in gdal). See eg [1].

The package already exists and has been tested by quite a number of
users on my ppa[2], and it is part of the osgeo live dvd.

The problem is that saga relies on a new version of wxwidgets (2.9)
which may break building grass gis if it is just added to the ppa.
This can be solved by renaming the package wx-common to eg
wx-common-29 and making it conflict with wx-common. That way all
existing wx-widgets programs will still work and build fine unless a
build-dependency is made to wx-common-29.
Anyone opposed to this solution? If needed I can first upload
everything to testing to make sure it really works.

Johan

[1] http://gis.stackexchange.com/questions/72957/installing-qgis-2-0-and-saga-2-1-on-ubuntu-13-04
[2]https://launchpad.net/~johanvdw/+archive/saga-gis