Revert "do it for debian, too"

This reverts commit 2db1002d4399dff87baa72071fa3fb81dd3bc01e.
Revert "passenger enterprise is just passenger.so"

This reverts commit e0a523d737fd0616e8363bb3f525c47c3923a456.
Revert "passenger enterprise support"

This reverts commit b2af0792801ff99fdd373067e837839d141a4c0c.
allow users to specify the passenger package name as a parameter

I think this may be a better way to support passenger enterprise, since
for all things but the package name it's just passenger, really