Remove unused global atom variables.
Remove unused local variables.
Add some help to the OSX makefile if one wants to compile with
homebrew for the dependencies instead of macports.  Thanks Kyle Isom
<kyle@tyrfingr.is> for initially doing it.
Add initial README.md for Github
cleanup linux Makefile.

from Michael Weber
update License section
Improve consistency of warning flags between makefiles.

Change default CC to cc.

Change symlinks to be relative.

Eliminate warnings.
Fix focus issue when (un)mapping a window on an unfocused region.
Fix focus state issue when switching between workspaces.

Closes FS#364
Fix crash in rg_n/mvrg_n when the target region does not exist.
Add new focus_urgent binding.
Focuses on the next window with the urgency hint set.  The workspace is
switched if needed.

Fix description of urgent_enabled in man page.
Fix compile issue on older versions of XCB.
Merge remote-tracking branch 'origin/master'