c2k15: rzalamena@ on mpw(4), network MP safety

For our next c2k15 installment, we welcome new developer Rafael Zalamena (rzalamena@), who just submitted his first-ever hackathon report:

My name is Rafael Zalamena (rzalamena@) and this was my first OpenBSD hackathon.

I was invited to the hackathon early this year to help renato@ and mpi@ todeal with the commit of mpw(4) device to finish the VPLS implementation forOpenBSD, but after the first days in Calgary I was offered an account todo my first commits.