stringnull branch

[Moritz Lenz]

Peter Lobsinger wrote:
> I've created the stringnull branch to use STRINGNULL in stead of NULL
> as the representation of the null string. It is now passing all tests
> (plus a few I added along the way), and all major HLLs (rakudo,
> cardinal, pipp, pynie, partcl) are the same status they are against
> trunk (with a patch against Rakudo).

I've applied the Rakudo patch, so now objections to merging from Rakudo
land.

Cheers,
Moritz