monkey patched localrepository instance to handle loadeol() call

Created originally on Bitbucket by sawolford (Scott Wolford)

Changesets for this Pull Request have not been imported, because it had been already declined on Bitbucket. Marked as closed by the import user.

Without this patch (or something similar), using guestrepo with the eol extension enabled gives the following error when running grupdate:

error: preupdate.eol hook raised an exception: 'localrepository' object has no attribute 'loadeol' 'localrepository' object has no attribute 'loadeol'