[PATCH 1/2] lib: replace deprecated xapian call 'flush()' with 'commit()'

[David Bremner]

David Bremner <david at tethera.net> writes:

> This will make notmuch incompatible with Xapian before 1.1.0, which is
> more than 6 years old this point.

pushed to master, which already requires Xapian 1.2.6, as of 0.23.1

d