RFR: JDK-8312603: ArrayIndexOutOfBoundsException in Marlin when scaleX is 0 + minor syntax fixes (merge with latest MarlinFX)

[Laurent Bourgès]

Fixed scale=0 in DMarlinPrismUtils + added new test Scale0Test.java

-------------

Commit messages:
 - JDK-8312603: ArrayIndexOutOfBoundsException in Marlin when scaleX is 0 + minor syntax fixes (merge with latest MarlinFX)

Changes: https://git.openjdk.org/jfx/pull/1348/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1348&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8312603
  Stats: 366 lines in 14 files changed: 312 ins; 10 del; 44 mod
  Patch: https://git.openjdk.org/jfx/pull/1348.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1348/head:pull/1348

PR: https://git.openjdk.org/jfx/pull/1348