[PATCH] tests: add compatibility layer

[David Bremner]

Mikhail <mp39590 at gmail.com> writes:

> On 16:32 09-Mar 2017 David Bremner wrote:
>> From: Mikhail <mp39590 at gmail.com>
>> 
>> Make test-lib-common.sh load test-lib-<$PLATFORM>.sh to create
>> additional shim for platform specifics.
>> 
>> Use test-lib-FREEBSD.sh to call GNU utilities instead of native ones.
>> 
>> - amended by db following Tomi's suggestions
>
> I've tested the patch on FreeBSD and it works fine.

Thanks for all your work on this, I've pushed the patch to master.  By
the way, I'm not sure if it's also an issue for FreeBSD, but we've
renamed libutil.a to libnotmuch_util.a to avoid a name conflict on some
BSD-ish systems.

d