Testsuite: Cleanup run_testsuite.cmake

This commit cleans up run_testsuite.cmake. It now

 - correctly determines and submits the branch name
 - writes a smaller revision.log without redundant information
 - does not set a subproject per branch anymore
Merge pull request #161 from tamiko/cleanup_run_testsuite_script

Testsuite: Cleanup run_testsuite.cmake

It now 
- correctly determines and submits the branch name
- writes a smaller revision.log without redundant information
- does not set a subproject per branch anymore
Minor style fixes.
Merge pull request #163 from bangerth/const-fixes

Minor style fixes.
Fix subversion keywords

Fix up forgotten $Id: ... $ - tags in several files.

This commit is primarily intended to test dev-vcs/hub [1] for pull-requests
on the command line

[1] https://github.com/github/hub
Merge pull request #164 from tamiko/fix_subversion_keywords

Fix subversion keywords
Add all of the files that describe the Davies et al. benchmarks.