64-bit portable bytecode done

[chromatic]

On Thursday 26 February 2009 14:57:50 Reini Urban wrote:

> I found the last bugs on 32-bit reading 64-bit pbc, and would
> appreciate countertests on 64-bit machines.
> It's a rather big patch, because I also const'ed pmc_freeze, added
> ptr_alignment checks, more #ifdef'd tracings
> and added random documentation.

> An unrelated bugfix: Parrot_compile_string missed to set interp->initial_pf
> = pf

Please submit the unrelated parts as separate patches or commits.

-- c