jmoiron plays the blues

fb56daf1 to cm darwin diffstat does not have -C option (what a surprise)
66917536 to cm use diffstat to provide a nice status command, change list to behave like show used to, add some diff/diffstat related code cleanup
d3339a3b to cm preserve file mtimes, add quickdiff based on stat info for much faster cm diff, remove package stuff as it wasn't there, add pull/push for quickly updating the cm overlay or updating from the cm overlay, add environ variables and documentation; now mostly ready for use as a dotfile syncer