Add test data to be used for testing upscaling binaries
Add test for upscale_perm

This test runs upscale_perm on a test model to see if it runs without
errors. Output is written to file, so that the results can be compared
to a reference solution in a later test.
Add application that compare two result files
Add test for upscale_perm

This test is twofold: First it tests if upscale_perm runs, and then compare
the solution with a reference solution by using the binary compare_upscling_results.

Documentation on how to add new tests is included.
Merge pull request #54 from laods/add_tests

Provide test for upscale_perm
Remove executable bit on input (data) file

Input data does not need to be executable, so remove the executable
bit on platforms where it matters.
Merge pull request #55 from bska/devel

Remove executable bit on input (data) file