patch applied (ghc-6.8/packages/unix): Use the C wrappers for [gs]etrlimit

[Ian Lynagh]

Tue May 20 09:20:48 PDT 2008  Ian Lynagh <igloo at earth.li>
  * Use the C wrappers for [gs]etrlimit
  This is for #2038: macros are used in the Linux .h includes to redirect
  to a 64-bit version when large file support is enabled.

    M ./System/Posix/Resource.hsc -2 +2