add eml2mbox.rb
add eml2mbox.rb

This is from http://www.broobles.com/eml2mbox/, but I fixed it to work
with recent version of Ruby (say, 1.9, which removed parsedate module)

esjeon/graveyard,esjeon/graveyard,esjeon/graveyard,esjeon/graveyard,esjeon/graveyard,esjeon/graveyard,esjeon/graveyard,esjeon/graveyard,esjeon/graveyard,esjeon/graveyard