mutter (3.22.1-2+rpi1) stretch-staging; urgency=medium

mutter (3.22.1-2+rpi1) stretch-staging; urgency=medium

  [changes brought forward from 3.14.4-2+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Mon, 25 May 2015 01:53:01 +0000]
  * Move libsystemd-dev from build-depends to build-conflicts and add
    libsystemd-login-dev to build-conflicts to prevent build of native backend
    which fails with non-egl clutter.
  [changes introduced in 3.21.92-1+rpi1 by Peter Michael Green]
  * Modify debian/rules to Use wayland disabling settings (as used
    by non-linux ports of debian)
  * fix clean target.
  * Move wayland related build-dependencies to build-conflicts.
  * Add --disable-xlib-egl-platform to configure flags
  * Comment out #include <cogl/winsys/cogl-winsys-egl-private.h> in
    cogl/cogl/cogl-mutter.h
  * Make further hacks to make non-egl build succeed (and probablly break egl builds in the process).
  [changes introduced in 3.22.1-2+rpi1 by Peter Michael Green]
  * Remove build-dependency on libegl1-mesa-dev

[dgit import unpatched mutter 3.22.1-2+rpi1]