Build system changes

[Ian Lynagh]

Hi all,

The

    http://darcs.haskell.org/ghc-build-system/

branch (of the ghc HEAD repo) has some improvements to the build system;
in particular, bindists work again, and (on Windows) if you install

    Inno Setup http://www.jrsoftware.org/isinfo.php

and define

    ISCC = c:/Program\ Files/Inno\ Setup\ 5/iscc.exe

in mk/build.mk then a Windows installer

    ghc-6.7.20070609-i386-unknown-mingw32.exe

is be built.


If you have any problems (especially things that work in the HEAD but
not this branch) then please let me know.


Thanks
Ian