RFR: 8217472: Add attenuation for PointLight

[Nir Lisker]

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

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Commits:
 - a388fb92: Fixed whitespaces
 - 415927e6: Correction for indexes
 - 3450ffe9: Docs and year update
 - 4b63a01f: Merge remote-tracking branch 'nlisker/8217472_Add_attenuation_for_PointLight' into 8217472_Add_attenuation_for_PointLight
 - 52e1ae1a: Separate range from attenuation
 - d39bceeb: GL pipeline
 - a590f09a: Initial push of 8217472

Changes: https://git.openjdk.java.net/jfx/pull/43/files
 Webrev: https://webrevs.openjdk.java.net/jfx/43/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8217472
  Stats: 498 lines in 27 files changed: 385 ins; 13 del; 100 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