[FIX] Fixing test for seqan::log2() in MSVC 12.
[FIX] Making path name of the alignment tutorial demos shorter.

VS12 had problems with them.
Merge pull request #68 from holtgrewe/fix/nightly_builds

[FIX] Hotfix for nightly builds.
[FIX] WuManber now also works when one needle is empty.
Merge pull request #71 from holtgrewe/hotfix/find_wu_manber

[FIX] WuManber now also works when one needle is empty.