Add syntax coloring to wiki

[nowakpl]

Can we have trac wiki to support C / C++ syntax coloring ?

​http://trac.osgeo.org/gdal/wiki/TracSyntaxColoring

[nowakpl]

XML coloring would be nice too.

[warmerdam]

Howard,

I think you have already setup the syntax support with enscript, right? I'm not in favor of the xml highlighting if it is going to require all that silverlight stuff, but I leave it to your judgement of course.

[crschmidt]

With 0.11, we only need python-pygments, which was just an apt-get install and an apache restart away.

from future import awesome
def foo(a):
    print "The world is %s %s" % (a, awesome)