Fixes#482

We need it to find dependencies.

This is not needed, as we only use the QML import. This allows buildswithout QtMultimedia to finish.

It does not seem to be available by default for me.

It is not available at all on newer Mac. Unfortunately, we cannot relyon pkg-config to pick it up for us, as homebrew doesn't symlink the .pcinto the right place, so force the user to specify the path.

We cannot set a dependency to force updateqm to run before rcc, whichmakes rcc complain (unnecessarily, really) about missing language files.To prevent this being a source of confusion, switch from using an extracompiler to running lrelease by hand.Note that this does mean that updating translations will mean that qmakewill need to be reinvoked as there is no way of specifying the .ts asbuild dependencies, but this should not be a source of major burden.

 - Check LIBRESSL_VERSION_NUMBER in addition to OpenSSL > 1.1LibreSSL forked from OpenSSL 1.0.1f and does not have all featuresfrom 1.1.0.

Issue:#278

Fixes#299

Fixes#300.

It has now been over a year since the NCC Group audit:*https://motherboard.vice.com/en_us/article/ricochet-encrypted-messenger-tackles-metadata-problem-head-on*https://ricochet.im/files/ricochet-ncc-audit-2016-01.pdf

* Update usr.bin.ricochet-apparmorneeds access to /sys/devices.../config for some graphics cards (i915 it seems, in my case), access to /proc/$PID/environ to read envvars (e.g. TOR_CONTROL_PORT), access to Tor's Control Cookie file to authenticate. Strangely also /dev/dri/ to draw the UX (not covered by <abstractions/X>?) Updated with `aa-genprof`, tested under Tails 3.0.1 and Debian Stretch desktop.The apparmor profile can be installed in `make install` by passing `DEFINES+=APPARMOR`, and optionally `APPARMORDIR=/path/`.