patch applied (ghc-6.12/ghc): Define RM_OPTS_REC in the 6.12 branch build system

[Ian Lynagh]

Tue May 18 06:15:28 PDT 2010  Ian Lynagh <igloo at earth.li>
  * Define RM_OPTS_REC in the 6.12 branch build system

    M ./mk/tree.mk +1

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=ghc-6.12/ghc;a=darcs_commitdiff;h=20100518131528-3fd76-18d2a7a270a08d2cccf66b4efd0d3f4b460fa9c3.gz