patch applied (cabal): Allow the bindir, libdir and libexec dir to be specified via env vars too

[Duncan Coutts]

Mon May 19 10:38:08 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Allow the bindir, libdir and libexec dir to be specified via env vars too
  Same as for the datadir. Eg for package Foo, you'd use
  Foo_bindir=... Foo_datadir=... Foo_libexecdir=... ./Foo
  The next step would be generating a wrapper script that allows
  running the program inplace. It should also work for a library.

    M ./Distribution/Simple/Build.hs -3 +3

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20080519173808-adfee-87e51956f054a229fa814fe5e1afc03b55b8060f.gz