patch applied (packages/base): add unsafeLocalState from Haskell 2010, and docs

[Simon Marlow]

Tue Jul 20 01:28:19 PDT 2010  Simon Marlow <marlowsd at gmail.com>
  * add unsafeLocalState from Haskell 2010, and docs

    M ./Foreign/Marshal.hs -1 +29

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=packages/base;a=darcs_commitdiff;h=20100720082819-12142-7eeab09f4db4e9534a6d6d162ec19b5ba4cc68b8.gz