Remove SVN tags

Remove SVN tags from one file so far forgotten.
Whitespaces in CMakeLists.txt

Adjust a couple of whitespaces across various CMakeLists.txt.
Remove a No-Op in tools/CMakeLists.txt

Remove a line that did not really do anything.
Correct usage of 'SYSTEM' option in include_directories()

The 'SYSTEM' option in Cmake's include_directories command acts on all
following directories, so a number of ROOTPWA's directories were also
taken as system directories in some sub-directories. Reordered the
directories given to include_directories in the following order:
1. current source directory
2. other ROOTPWA directories
3. 'SYSTEM'
4. all external include directories (ROOT, libconfig, Boost, python, ...)
Merge pull request #58 from suhlatwork/cmake

Correct usage of SYSTEM in Cmake's include_directories