Multiverse/Multiverse-NetherPortals — pull request #73 by cybertiger (2013-04-23 20:57:11+00:00)
Title: Don't handle portals which are handled by Multiverse-Portals.

Adds a soft dependency on Multiverse-Portals.

Before handling events, call into Multiverse-Portals (if present) and check if the portal block is part of a portal belonging to Multiverse-Portals. If it is, ignore the event.