Issue #233: initial round of changes in support of adding gitorious and bitbucket
Issue #233: bitbucket implementation and tests
Issue #233: checkpoint before stopping work on supporting Gitorious, see Issue #287: for rationale
Issue #233 and Issue #287 move extensions methods for Gitorious support to Metacello-Gitorious package and remove Metacello-Gitorious package from baseline
#issue #287 ... save Metacello-gitorious package
issue #287 ... save Metacello-gitorious package
Merge branch 'dev' of github.com:dalehenrich/metacello-work into dev
Merge pull request #289 from dalehenrich/dev

`bitbucket://` support