[TASK]  Fixes to use smoothmigration with both LTS Versions

Hi, this version is compatible with TYPO3 6.2 and 4.5
I refactored this last week: https://github.com/nxpthx/typo3-upgradereport/blob/master/Classes/Utility/ExtensionUtility.php#L185 The ExtensionUtility is now the single place to go for fetching a list of loaded / installed / compatible extensions.

I agree we need to get this extension up and running on 6.2. It's mostly working. One thing that does not work is the cli script. But we can easily use an extbase commandcontroller for that.