Cleaned output files from test run

Removed the outputfiles in GETLLM/test/data/run1/ouput/to_check|valid
Since the path to some files will be stated in these files and it
happens that different cpu calculate different floating values it makes
no sense to track these files any more.
To untrack them I added a .gitignore-file with the exclusion of *.out
files for further commits.
Adapt filecheck.py and added new run directory

the valid output directory in GetLLM/test/data/x/output/valid can be
empty now. If this directory is empty then new output will be produced.
Added option in filecheck.py

Added a new option to create separate output. Therefor I modified
additionaly CMakeLists.txt and runvalidator.
Switched from newer argparse to older optparse since python 2.7 is not
available on exectuion servers.