patch applied (ghc): mkDerivedConstants.c depends on ghcplatform.h

[Simon Marlow]

Fri Mar 24 05:26:13 PST 2006  Duncan Coutts <duncan.coutts at worc.ox.ac.uk>
  * mkDerivedConstants.c depends on ghcplatform.h
  I think this missing dep is what broke my parallel build
  I used make -j2 with ghc-6.4.2.20060323 and got:
  
  ------------------------------------------------------------------------
  ==fptools== make boot -wr --jobserver-fds=3,11 -j;
  in /var/tmp/portage/ghc-6.4.2_pre20060323/work/ghc-6.4.2.20060323/ghc/includes
  ------------------------------------------------------------------------
  Creating ghcplatform.h...
  Done.
  gcc -O -O2 -march=k8 -pipe -Wa,--noexecstack    -c mkDerivedConstants.c -o mkDerivedConstants.o
  In file included from ghcconfig.h:5,
                   from Stg.h:42,
                   from Rts.h:19,
                   from mkDerivedConstants.c:20:
  ghcplatform.h:1:1: unterminated #ifndef
  Done.
  						    
  With this patch applied I can no longer repoduce this build bug.
  So I think this patch should be applied to the cvs ghc-6-4-branch too.

    M ./ghc/includes/Makefile -1 +1