Replace OS process calls by Zinc and ZipArchive calls.
Update the baseline to remove OSProcess dependency for Pharo 3.0
Merge pull request #207 from demarey/master

Remove OSProcess dependency for Pharo 3.0 ... fixed the bug that caused the majority of test failures ... Issue #202 is still a problem with random failures...
Merge branch 'master' into dev
Issue #202: MetacelloScriptingEnsureLoadedTestCase>>testWarningDuringLoad log package contents ... classes defined in package ... may have to resort to snapshot spelunking?