Add module for ccache support.
Add module for ccache support.

It's based on information retrieved from:
https://www.virag.si/2015/07/use-ccache-with-cmake-for-faster-compilation/
http://petereisentraut.blogspot.no/2011/05/ccache-and-clang.html

coderefinery/autocmake,scisoft/autocmake,miroi/autocmake,robertodr/autocmake,miroi/autocmake,scisoft/autocmake,coderefinery/autocmake,robertodr/autocmake