Log Message:
devel/hs-memotrie: import hs-memotrie-0.6.10

MemoTrie provides a basis for memoized functions over some domains, using
tries. It's based on ideas from Ralf Hinze and code from Spencer
Janssen. Generic support thanks to Sam Boosalis.

Project wiki page: http://haskell.org/haskellwiki/MemoTrie