Bug 441610 - Build and release management

https://bugs.eclipse.org/bugs/show_bug.cgi?id=441610

Eclipse Staging target not all platforms included (linux ppc64le not
working)
Bug 454790: AbstractColumn.validateColumnValue logs an unnecessary info
message when validating non-internal table rows

https://bugs.eclipse.org/bugs/show_bug.cgi?id=454790

Change-Id: I7d8b81efedb95dba16c5f08ca2e03b43adfc0e02
Reviewed-on: https://git.eclipse.org/r/37984
Tested-by: Hudson CI
Reviewed-by: Beat Schwarzentrub <bsh@bsiag.com>