patch applied (ghc): Use "-perm -u+x" rather than "-executable" to find executables

[Ian Lynagh]

Thu Dec 16 06:52:35 PST 2010  Ian Lynagh <igloo at earth.li>
  * Use "-perm -u+x" rather than "-executable" to find executables
  On Windows, -executable is matching the html docs.

    M ./bindisttest/checkBinaries.sh -1 +1

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=ghc;a=darcs_commitdiff;h=20101216145235-3fd76-98d0c663adcb27c11f34a36afebf29fff5938c05.gz