[PATCH 1/3] configure: add ${NOTMUCH_SRCDIR} -- absolute path to notmuch source

[David Bremner]

Tomi Ollila <tomi.ollila at iki.fi> writes:

> The ${srcdir} -- usually relative path to notmuch source -- works fine
> in current ./configure and all makefiles. To have simple access to
> notmuch source in tests and out of tree builds holding absolute path to
> the source directory is useful.

series pushed to master.

d