changes for PA
Timing out Grabed Pointer

Releasing and stop reading (read-char) for the grabbed pointer after
*grab-pointer-timeout* seconds so in case if user forget providing any
keyboard input after pressing prefix key, stumpwm will wait for
specified seconds than stop reading next char and again ungrab point
back.
Merge branch 'point-timeout' into pa-point-timeout
Merge branch 'master' into pa
Merge branch 'master' into point-timeout
Merge branch 'master' into pa-point-timeout
Merge branch 'pa-point-timeout' of github.com:sharad/stumpwm
Merge branch 'point-timeout' of github.com:sharad/stumpwm