Fixed a couple of bugs in treemerge; wasnt merging up always, one more bug is still hiding.
timestamp: fixed repeated timestamp
treemerge: Added deepness test
Merge pull request #81 from SeeSpotRun/develop2

Develop2
treemerge: fixed a bunch of not-so-fun bugs
treemerge: added tests, so I dont screw it up again.
treemerge: removed debug prints
treemerge: removed debug print in test
treemerge: precompute path depth
treemerge: added symlink testcase
treemerge: add mount --bind test that gets executed when running nosetest as sudo
travis: run tests as root (for mount --bind)
little fixup
Merge branch 'develop' of https://github.com/sahib/rmlint.git into develop2