hg: openjfx/jfx-dev/rt: 8209652: Ensemble: Update version of Lucene to 7.4.0

[kevin.rushforth at oracle.com]

Changeset: e1d1bb48b99a
Author:    kcr
Date:      2018-08-29 08:07 -0700
URL:       http://hg.openjdk.java.net/openjfx/jfx-dev/rt/rev/e1d1bb48b99a

8209652: Ensemble: Update version of Lucene to 7.4.0
Reviewed-by: prr

! apps/samples/.classpath
! apps/samples/Ensemble8/build.gradle
! apps/samples/Ensemble8/build.xml
! apps/samples/Ensemble8/legal/lucene.md
! apps/samples/Ensemble8/nbproject/project.properties
! build.gradle