Fixing a buffer overflow error in chomp.
Merge pull request #13 from fimad/master

Fixing a buffer overflow error in chomp.
Add missing config.mk option

There's 8 possible configurations for the 3 features.

One of them was missing (Xinerama and XFT).
Merge pull request #14 from baskerville/master

Add missing config.mk option
Add documentation for relative geometry
Merge upstream