net-im/hipchat-2.2.1107
Add ebuild for dev-db/libdrizzle, modified from dz-overlay.

https://github.com/duzhe/dz-overlay

Mostly cosmetic changes.
Allow nginx to depend on either libdrizzle or drizzle.

On some machine, I have the same problem described in:

https://groups.google.com/forum/#!topic/OpenResty/6jpZaqa7eP8

when using dev-db/drizzle-7.2.4.