Replace pipes. Cf. ticket #102.

Source: http://forum.secretchronicles.de/topics/158#p762
Add compatibility code for levels using the old pipes.
Merge branch 'release-2.0.0' of git://github.com/SonOfBowser/TSC into release-2.0.0
Fix backslash issues.
Add new level sauer2_15.
Add missing dependency on coderay for doc generation to docs.
Removed gitignore entry for cmake files