RFR: 8242548: Honor line spacing in Labeled reflow calculation

[Ajit Ghaisas]

On Tue, 21 Apr 2020 12:48:37 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

>> @aghaisas can you review this?
>
> @aghaisas can you also review this?

I tested with the test program in the bug and can confirm that this PR fixes the reported issue.

I found that the unit test (together with stub) passes without the code fix as well.
I think, this is a limitation of our test framework that we need to do code fix + stub fix as well. I find that you
have done these changes.

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