eclipse-emf-2.22.0-150200.4.6.3

- Force building with Java 11, since tycho is not knowing about any
  Java >= 15

- Upgrade to 2.22.0
  * No changelog was made available.
- Removed patches:
  * remove-nebula-dep.patch
  * remove-network-tests.patch
  * remove-timezone-test.patch
  * remove-unnecessary-imports.patch
- Added patches:
  * 0001-Remove-dependency-on-nebula.patch
  * 0002-Remove-test-that-requires-talking-to-the-internet.patch

- Build against jgit, since jgit-bootstrap does not exist

- Change the way the bootstrap/non-bootstrap packages are built in
  order to have a working eclipse as a final product (bsc#1166426)

- Initial packaging of eclipse-emf 2.15.0~gitd1e5fdd as _multibuild
  package in order to allow bootstrapping

- Change the way the bootstrap/non-bootstrap packages are built in
  order to have a working eclipse as a final product (bsc#1166426)

- Initial packaging of eclipse-emf 2.15.0~gitd1e5fdd as _multibuild
  package in order to allow bootstrapping