Log Message:
Update x11/slock to 1.3.

pkgsrc changes:
- Delete NO_CONFIGURE (it is not needed and sometimes can be harmful)

Changes:
The changes since version 1.2 are:
- bugfix: The cover window now resizes correctly when new screens are added or
  the resolution is changed while the lock is active.
- new: slock now has a third color. The three colors are used for startup,
  typing and failed login attempt.
- new: slock now allows to run any command after the screen has been locked, for
  example suspending to ram.
- slock now has a man page.
- a few small fixes and code style updates to make it more consistent with the
  rest of the suckless projects.

ok reed@