* 'feature/systemd_user_units' of github:dvzrv/jack2:
  wscript: Integrating systemd wscript in configure and build stages.
  systemd/wscript: Adding wscript for systemd (detection of systemd user unit dir and installation of systemd user units and accompanying configuration.
  systemd/jack@.service: Adding LimitMEMLOCK and adding (a commented) disabling of OOMScoreAdjust (which would disable OOM killer).
  systemd/example.conf: Being a little more specific in the comments regarding the environment variables.
  systemd/jack@.service: Switching Type to notify (we're not doing full dbus naming, when starting jackd.
  systemd/*: Adding templated systemd user unit and configuration profile example.

Signed-off-by: falkTX <falktx@falktx.com>

I was sure I did this already...

Signed-off-by: falkTX <falktx@falktx.com>

Thanks for noticing

Signed-off-by: falkTX <falktx@falktx.com>

Signed-off-by: falkTX <falktx@falktx.com>

Signed-off-by: falkTX <falktx@falktx.com>

Conflicts:
	common/JackEngine.cpp
	common/JackEngine.h

aften v0.0.8 is latest released tarball.
https://downloads.sourceforge.net/aften/aften-0.0.8.tar.bz2
Travis builds for OSX use aften v0.0.8 (brew).

More recent aften code has introduced an additional parameter to aften_encode_frame().

The check in wscript compiles a small test program to see if the additional parameter is understood.
If additional parameter 'count' is available, set HAVE_AFTEN_NEW_API.

HAVE_AFTEN_NEW_API is used in common/JackAC3Encoder.cpp to call aften_encode_frame()
either with or without 'count' param.

Problem:
int res = aften_encode_frame(&fAftenContext, fAC3Buffer + SPDIF_HEADER_SIZE, fSampleBuffer);
Fails, because API is
AFTEN_API int aften_encode_frame(AftenContext *s, unsigned char *frame_buffer,const void *samples, int count)

The additional parameter 'count' was added to libaften function aften_encode_frame() here:
e1cbb66628 (diff-d4868af7d235a914aef2ec4f979fcb9fR87)

Solves https://github.com/jackaudio/jack2/issues/455

[metadata] Fix property key length to notification/callback requests.

Fix memory leak of parameter constraints.

JackTools is a part of the LGPL licenced jacklib and should not pull in
GPL licensed code.

* Fix generation of client uuid

Signed-off-by: falkTX <falktx@falktx.com>

* Remove all client properties when removed; Cleanup a few things

Signed-off-by: falkTX <falktx@falktx.com>

* Make all uuid function arguments use jack_uuid_t type; Fix warnings

Signed-off-by: falkTX <falktx@falktx.com>

* Rework uuids to never be int, more cleanup

Signed-off-by: falkTX <falktx@falktx.com>

Signed-off-by: falkTX <falktx@falktx.com>

* Solving problems while compiling jack2 on macOS X with dbus support

* Using the right function name in uptime error

Signed-off-by: falkTX <falktx@falktx.com>

Signed-off-by: falkTX <falktx@falktx.com>

Signed-off-by: falkTX <falktx@falktx.com>

For this client program, it's hard to imagine a case where
autostarting a jack server is reasonable just to query or set the bufsize.

This is in accordance with programs like jack_lsp, jack_connect
(do not start a server if none is running).