More work on fixing some issues with the logic that picks between versions of distributions in the environment vs the package index
CONFIG.installer_search_path now respects $ENV_VAR expansion, and now works like a regular multi-line key instead of the unix ':' splitting.  More bugfixing with dev/final version and the search path.
removed trace
Merge branch 'master' of git://github.com/eeaston/pkglib