[patch v3 1/4] build: integrate building ruby bindings into notmuch build process

[David Bremner]

David Bremner <david at tethera.net> writes:

> Because ruby generates a Makefile, we have to use recursive make.
> Because mkmf.rb hardcodes the name Makefile, put our Makefile{.local}
> in the parent directory.

Pushed the first patch in the series. Let's see if anything breaks.

d