git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@484 c06c8d41-db1a-0410-9941-cceddc491573
HL6BR2XEXRPWBU4MQNI52H65OSJB46KOLC4R3KWNQYDEPPXBAH3AC
pickup_mode = (multi | single | auto:X)
Single is the classical behaviour (and default): when picking up
items, you are prompted for them one by one. Multi makes a menu
appear, where you can choose which items to pick up. Note that
no matter how many items you choose, picking up will always take
one turn.
If pickup_mode is auto:X, where X is some number (for example,
auto:5), then pickup will give a menu if there are at least X
items on your square, and will prompt one by one otherwise.