CleverRaven/Cataclysm-DDA — pull request #6550 by bdragon28 (2014-03-11 03:26:11+00:00)
Title: Fix overmap performance issue -- make checking if the player has a pda a whole lot faster.

Due to the gps tracking stuff, the overmap was having to do a whole lot of checks for whether or not the player has a pda.

So, here's a cache along the lines of the existing has_nv() cache.