Improve some "standard" CMake Find modules by using macros
Install missing cmake Find modules and Macros
Merge pull request #5 from drdanz/MacroStandardFindModule

Improve some "standard" CMake Find modules by using macros

I'm merging this so that you can test it as well, if we find out that a macro does not fits our needs, we can revert these changes and take only the useful stuff from the macro