recipes: Eliminate WEBOS_VERSION

* drop webos_version, webos_submissions, webos_enhanced_submissions
  webos-ports-submissions
* use webos_ports_repo for our own projects
* use webos_ports_fork_repo for projects we have forked into our github
  prefix (using webOS-ports/master branch)
* bitbake fetcher is good enough for us

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
recipes: Drop OE_QMAKE_PATH_HEADERS assignments

* this is now default value

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
webos_cmake_qt5: Add one bbclass to inherit cmake_qt5 as well as webos_cmake

* the comment is no longer valid, because webos_cmake now depends on
  cmake.bbclass to set separate B, but move them together and replace
  the inherits in recipes

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Drop unnecessary backports from newer oe-core

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
lxc: Drop imported recipes from meta-virtualization

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
bblayers.conf: Split meta-webos-ports layer to meta-luneos and meta-luneui

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>