Merge pull request #304 from dalehenrich/dev

Merge last of bugfixes for 1.0.0-beta.32.16.

I'm going to go ahead and merge this pull request despite the existence of Issues with SSL on Squeak platforms: Issue #305 and Issue #303 ... the final resolution for these particular issues are still up in the air and I don't want to dely the release of 1.0.0-beta32.16 any longer ... will push bugfixes for those issues when we got things characterized correctly
Issue #306: move MetacelloNameNotDefinedError extension method to 3.x specific package