patch applied (packages/base): Fix iconv detection on OpenBSD

[Ian Lynagh]

Wed Jun 24 05:54:22 PDT 2009  Ian Lynagh <igloo at earth.li>
  * Fix iconv detection on OpenBSD
  Matthias Kilian discovered that iconv_open is #define'd to something
  else on OpenBSD, so the test needs to include the iconv header.

    M ./aclocal.m4 +36
    M ./configure.ac -2 +16

View patch online:
http://darcs.haskell.org/packages/base/_darcs/patches/20090624125422-3fd76-c191d33810fc7525f23e53e7e061edb014397534.gz