TCI - Set Execution Environment to JavaSE-1.8 for all bundles

Except for org.eclipse.emfforms.core.bazaar.tests because BazaarVariant
does not compile with Java 8 (Generics Issue).

Change-Id: If9ac814e2381eaca04577a8945bcb84779596cb0
Signed-off-by: Lucas Koehler <lkoehler@eclipsesource.com>
978 files changed