RFR: 8247564: Lanai - SwingSet2 - Motif L&F - UI controls border is incorrectly drawn with uiScale=1.0

[Denis Konoplev]

DrawLine implementation same as in OGLRenderer.c
It fixes JList borders and helps with lines inside radio buttons.

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Commit messages:
 - DrawLine implementation same as in OGLRenderer.c

Changes: https://git.openjdk.java.net/lanai/pull/68/files
 Webrev: https://webrevs.openjdk.java.net/lanai/68/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8247564
  Stats: 57 lines in 1 file changed: 53 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/lanai/pull/68.diff
  Fetch: git fetch https://git.openjdk.java.net/lanai pull/68/head:pull/68

PR: https://git.openjdk.java.net/lanai/pull/68