[Rev 01] RFR: 8217472: Add attenuation for PointLight

[Nir Lisker]

> CSR: https://bugs.openjdk.java.net/browse/JDK-8218264

The pull request has been updated with 1 additional commit.

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Added commits:
 - f66e8cf4: Addressing review comments

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/43/files
  - new: https://git.openjdk.java.net/jfx/pull/43/files/a388fb92..f66e8cf4

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/43/webrev.01
 - incr: https://webrevs.openjdk.java.net/jfx/43/webrev.00-01

  Stats: 25 lines in 3 files changed: 8 ins; 2 del; 15 mod
  Patch: https://git.openjdk.java.net/jfx/pull/43.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/43/head:pull/43

PR: https://git.openjdk.java.net/jfx/pull/43