Changes for 0.5
---------------
Configuration language changes:
	- off keyword for distcc and ccache to turn them off locally

Other changes:
	- ccontrol: "cannot decrement semaphore" fixed: support multiple users.
	- distcc: detect when distcc is failing, don't flood localhost.
	- documentation: fix cpus entry in ccontrol(1)
	- ccontrol-init: human names, fix some failure cases
	- ccache: don't limit distcc so hard when ccache enabled
	- install: create directories if necessary

Changes for 0.4
---------------
IMPORTANT: Configuration language changes:

	- "parallel" renamed to "cpus" (other was confusing)

	- "[global]" must be replaced by "[*]": we now process *every*
	  matching section, in order.

Other changes:
	ccontrol-init: better handling for probing distcc hosts
	configuration: "include" keyword for including files
	documentation: clarifications, hacking advice, license
	distribution: include .hg dir to help users become developers
	users: ccontrol now has a second user (and developer)
	
