patch applied (packages/base): deprecate unGetChan and isEmptyChan (see #4154)

[Simon Marlow]

Mon Jul  5 05:59:52 PDT 2010  Simon Marlow <marlowsd at gmail.com>
  * deprecate unGetChan and isEmptyChan (see #4154)

    M ./Control/Concurrent/Chan.hs +2

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=packages/base;a=darcs_commitdiff;h=20100705125952-12142-c5bdef05cefa5a89066a4fd86a9abccf71829847.gz