[Rev 02] 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:
 - 464e8b5d: Fixed shader compilation errors for 2 and 3 lights in es2

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/43/files
  - new: https://git.openjdk.java.net/jfx/pull/43/files/f66e8cf4..464e8b5d

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/43/webrev.02
 - incr: https://webrevs.openjdk.java.net/jfx/43/webrev.01-02

  Stats: 11 lines in 2 files changed: 0 ins; 0 del; 11 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