Bug 466829 - Upgrade platform.ua to Lucene 6.1.0

Note that for exact analyzer use (wildcard and exact searches using
quotes) the number of results will not match because of a bug in the old
code.

The files added under folders .../indexXYZ are needed for compatibility
tests which I added. See PrebuiltIndexCompatibility.java changes.

Change-Id: Id18cdb387ada7f2c30eecbe59b726d3bf6dd00c1
Signed-off-by: Sopot Cela <scela@redhat.com>
39 files changed