* rewrite ERP5Site_upgradeBusinessTemplateList more generic based on business template repositories.
* remove upgrading MySQL charset part, that should be handled by buildout MySQL setup and reindexing with clear_catalog=1.
* remove handling zope version and python version, that should be handled by instance creation in buildout.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43193 20353a03-c40f-0410-a6d1-a30d3c3de9de