This update fixes the grub-2.0 warning issue that was worked around in commit
4f5e655b36b61505fc1d1c4157e4f721a5e80a8a. Consequently, that patch is no longer
needed.
* Make builders unexecutable by removing the hash-bang line and
execute permission.
* Convert calls to `derivation' to `mkDerivation'.
* Remove `system' and `stdenv' attributes from calls to
`mkDerivation'. These transformations were all done automatically,
so it is quite possible I broke stuff.
* Put the `mkDerivation' function in stdenv/generic.
svn path=/nixpkgs/trunk/; revision=874