raisePrivs warns when PROGNAME isn't set defined in task
sti-slc uses new-style privs
Merge branch 'master' of github.com:fadein/dotzsh

* 'master' of github.com:fadein/dotzsh:
  gitprompt displays ahead/behind w/rt remote
  colorize upstream branch name if we're ahead/behind
  minor gitprompt fixes
  much improved gitprompt
  sec2time: convert Unix epoch time to human-readable
  export DONT_MOUNT_BOOT for porterage
  Store value of $0 into PROGNAME in the EXAMPLE task
  alias maek=make