Issue #196: revert change from 8ec1897e61c3fd8447e6ef11c110fbdf9fe17e72 (MetacelloCommonMCSpecLoader>>ensureForDevelopment mod) ... Issue #198 and Issue #199 test cases
Issue #198: proposed bugfix plus test case
Issue #198: additional tweak to bugfix
Issue #199: final set of proposed bugfixes plus some test tweaks