Finally bow to the inevitable and deprecate apg -- it has seen no
development for years, and the distfiles are no-longer available
except for a private copy in my account on freefall. Expiry date set
to 3 months from now.

Also, since it has bit-rotted so much that its cracklib integration
doesn't work correctly, delete the CRACKLIB option.

PR: 250868
Submitted by: Geoff Moraes