Merge the agl-compositor sandbox into master

The changes prepared by Marius for agl-compositor
have been reviewed in the sandbox/mvlad/agl-compositor.

This is the merge to master.

Notes:
- weston+ivi-shell+windowmanager are replaced using agl-compositor
- applications have been adapted accordingly
- CI will likely fail as we need to merge all related patches

* gerrit/sandbox/mvlad/agl-compositor:
  Make the agl-compositor the default compositor
  recipes-demo-hmi: Remove qtaglextras and *-windowmanager depends
  packagegroup-agl-demo-platform: Remove qtaglextras dependency
  packagegroup-hmi-framework: Remove *-windowmanager dependency

 recipes-demo-hmi/alexa-viewer/alexa-viewer_git.bb                | 6 ++++--
 recipes-demo-hmi/dashboard/dashboard_git.bb                      | 2 +-
 recipes-demo-hmi/homescreen/homescreen_git.bb                    | 6 ++++--
 recipes-demo-hmi/hvac/hvac_git.bb                                | 5 +++--
 recipes-demo-hmi/launcher/launcher_git.bb                        | 5 ++++-
 recipes-demo-hmi/mediaplayer/mediaplayer_git.bb                  | 1 -
 recipes-demo-hmi/messaging/messaging_git.bb                      | 1 -
 recipes-demo-hmi/mixer/mixer_git.bb                              | 1 -
 recipes-demo-hmi/navigation/navigation-demo_git.bb               | 1 -
 recipes-demo-hmi/navigation/ondemandnavi_git.bb                  | 2 --
 recipes-demo-hmi/navigation/poiapp_git.bb                        | 2 +-
 recipes-demo-hmi/navigation/tbtnavi_git.bb                       | 1 -
 recipes-demo-hmi/onscreenapp/onscreenapp_git.bb                  | 2 +-
 recipes-demo-hmi/phone/phone_git.bb                              | 1 -
 recipes-demo-hmi/radio/radio_git.bb                              | 2 +-
 recipes-demo-hmi/settings/settings_git.bb                        | 2 +-
 recipes-demo-hmi/taskmanager/taskmanager_git.bb                  | 1 -
 recipes-platform/packagegroups/packagegroup-agl-demo-platform.bb | 4 +---
 recipes-platform/packagegroups/packagegroup-hmi-framework.bb     | 6 ------
 19 files changed, 21 insertions(+), 30 deletions(-)

Change-Id: I2942a82beee36f283817ae566ec44b5f3219411f
Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>