RFR: 8165943: LineBreakMeasurer does not measure correctly if TextAttribute.TRACKING is set. [v4]

[Olga Mikhaltsova]

> This is a fix for LineBreakMeasurer. It takes into account the TextAttribute.TRACKING value (not eq 0) while calculating the line breaks.
> 
> Tested on Linux x64, Windows x64, macOS x64 with the reproducer (LineBreakSample.java) attached to JDK-8165943 and the following group of tests:
> `$JTREG_HOME/bin/jtreg -jdk:$BUILD_HOME ./test/jdk/java/awt/font`

Olga Mikhaltsova has updated the pull request incrementally with one additional commit since the last revision:

  Deleted trailing whitespaces, added new line at the end

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Changes:
  - all: https://git.openjdk.org/jdk/pull/10289/files
  - new: https://git.openjdk.org/jdk/pull/10289/files/b1b4b146..c136384f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10289&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10289&range=02-03

  Stats: 5 lines in 2 files changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/10289.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10289/head:pull/10289

PR: https://git.openjdk.org/jdk/pull/10289