Log Message:
Update print/cups to cups-2.1.3.

Changes:
CHANGES IN CUPS V2.1.3
 - The default password function did not work on some platforms
   (STR #4750)
 - The scheduler should not exit under memory pressure
   (<rdar://problem/23255001>)
 - The EPL2 and ZPL sample drivers did not properly support the CutMedia
   option.
 - Pending subscriptions would prevent the scheduler from idle exiting
   (STR #4754)
 - Fixed some issues in ipptool for skipped tests
   (<rdar://problem/24137160>)
 - The "lp -H resume" command did not reset the \ 
"job-state-reasons"
   attribute value (STR #4752)
 - The scheduler did not allow access to resource files (icons, etc.)
   when the web interface was disabled (STR #4755)
 - Localization fix (STR #4756)