added first version of upgrade scripts from 3.2 to 4.0
upgrade perl first to avoid problems
fix transition from launchpad to archive
resume upgrade after expected fails
added retries like in 3.4 to 3.5 upgrade
remove conflicting packages first
fixed samba upgrade now that there is a transitional package
purge removed modules after upgrade
always run dist-upgrade with --purge for removed packages
Merge pull request #1604 from Zentyal/jacalvo/3.2-to-4.0

Jacalvo/3.2 to 4.0