make: add help target
make: use destination make variables
Move pat.py out of $PATH
patrc: Add emacs sh-mode local variable
XXX: squash to 573d58e5
pat: test debug in main
pat: Reword stdout messages
pat: Make $PAT_WORKING_DIR if necessary
pat.py: Add logging and debugging
pat.py: keep cache file mod 0600
pat.py: fix function description comment
pat.py: fix mail finding
patrc: Reduce poll time to 20 s
pat: add --log command
make: change patrc mod 0755 -> 0644
pat.py: change new mail notification summary