CVS hackery

[Matthew Fluet]

> I can't check in my changes to the ssa branch:

I need to take off for the night.  I put the new codegen files at
http://www.cs.cornell.edu/People/fluet/MLton/x86-codegen.tgz
That's just the four files listed below:

> [fluet@lennon src]$ cvs commit mlton/codegen/x86-codegen  
> cvs commit: Examining mlton/codegen/x86-codegen
> cvs server: sticky tag `ssa-branch' for file `mlton/codegen/x86-codegen/x86-allocate-registers.fun' is not a branch
> cvs server: sticky tag `ssa-branch' for file `mlton/codegen/x86-codegen/x86-translate.fun' is not a branch
> cvs server: sticky tag `ssa-branch' for file `mlton/codegen/x86-codegen/x86.fun' is not a branch
> cvs server: sticky tag `ssa-branch' for file `mlton/codegen/x86-codegen/x86.sig' is not a branch
> cvs [server aborted]: correct above errors first!
> cvs commit: saving log message in /tmp/cvsByqRsI

I also changed control.sml to make -native true the default, but you can
make that modification after checking the above in to the current ssa
world.