[Vm-dev] Closure conversion in 3.10

Hi Eliot -

I've just successfully converted a 3.10.2 image to closures (see follow-on message to Squeak-dev). In the process, the following three problems occurred:

1) DecompilerTests is not present in 3.10 and PreRecompilationPatches.st doesn't load unless you remove the modification to DecompilerTests.

2) #isMessageNode is not understood by ParseNode or MessageNode but sent in the recompilation process. I'm not sure where this is coming from (or where it should be); it could be a bug in 3.10.

3) Recompilation of Preferences results in spurious ERROR listings in the transcript during recompilation. Again, no idea where this comes from.

Other than that the conversion went entirely flawless.

Cheers, - Andreas