hg: openjfx/8/graphics/rt: Partial RT-31067: exclude doc-files/** from src dirs to avoid duplicate files

[hang.vo at oracle.com]

Changeset: 7ddf8864be99
Author:    kcr
Date:      2013-06-13 07:56 -0700
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/7ddf8864be99

Partial RT-31067: exclude doc-files/** from src dirs to avoid duplicate files

! generator.gradle