[Rev 01] RFR: 8242548: Honor line spacing in Labeled reflow calculation

[John Hendrikx]

> This is a solution for 8242548.  There was zero test coverage, so I added a few tests for this as well.

John Hendrikx has refreshed the contents of this pull request, and previous commits have been removed. The incremental
views will show differences compared to the previous content of the PR. The pull request contains one new commit since
the last revision:

  8242548: Honor line spacing in Labeled reflow calculation

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Changes:
  - all: https://git.openjdk.java.net/jfx/pull/173/files
  - new: https://git.openjdk.java.net/jfx/pull/173/files/86b2f011..8d6084eb

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/173/webrev.01
 - incr: https://webrevs.openjdk.java.net/jfx/173/webrev.00-01

  Stats: 15 lines in 2 files changed: 8 ins; 3 del; 4 mod
  Patch: https://git.openjdk.java.net/jfx/pull/173.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/173/head:pull/173

PR: https://git.openjdk.java.net/jfx/pull/173