Split up unmaintained ebuilds into separate overlays

[Dr-Terrible]

To avoid cluttering this repository, all the ebuilds about abandoned/unmaintained packages should be moved into a separate overlay (the place where ebuilds go to die): https://github.com/Dr-Terrible/graveyard-overlay

Let's trim the fat!

• dev-util/flint
• x11-base/xynth
• dev-ruby/feedzirra
• dev-ruby/god
• dev-ruby/gorillib
• dev-ruby/loofah
• dev-ruby/sax-machine
• dev-ruby/certificate_authority
• dev-python/django-fields
• dev-python/django-haystack
• dev-python/django-muddle-users
• dev-python/django-object-log
• dev-python/django-object-permissions
• dev-python/ganeti-webmgr-layout
• dev-python/inflection
• dev-python/muddle
• dev-python/ordereddict
• dev-python/plugnplay
• dev-python/smartypants
• app-editors/atom-bin
• www-servers/mongrel
• www-servers/wsgid
• app-doc/dexy (and all its dependencies)

Games that should be moved into the games-overlay:

• games-strategy/wesnoth (mostly fixes)
• games-strategy/ufo-ai
• games-strategy/endless-sky
• games-rpg/flare

[bpinto]

You are almost there @Dr-Terrible :)