RELEASE: mk-configure-0.39.3 BSD-friendly build system on top of bmake

[Aleksey Cheusov <vle%gmx.net@localhost>]

Hi everyone. I've just released new version of mk-configure.
It is available in pkgsrc (devel/mk-configure).

In short, it is a build system on top of bmake for UNIX-like systems
with capabilities of autoconf and (partially) libbsd/nbcompat.

This release was successfully tested on diverse OSes:
Darwin, Linux/{glibc,musl}, OpenBSD, NetBSD, Solaris-{10,11}.
In the past it was tested on FreeBSD, DragonFlyBSD, Cygwin and Interix.

List of changes is available here:
https://github.com/cheusov/mk-configure/blob/master/doc/NEWS

mk-configure is packaged in almost all Linux distro. So, you can use it
on Linux too using native package system.