[jdk11u-dev] RFR: 8248667: Need support for building native libraries located in the test/lib directory

[Andrew Lu]

Backport for  JDK-8248667
As make/Main.gmk still use the old format, make some change.

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Commit messages:
 - Backport 1356a0f1ac06b006a20ca9fa2306ef60aef5c16e

Changes: https://git.openjdk.org/jdk11u-dev/pull/2590/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2590&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8248667
  Stats: 150 lines in 4 files changed: 146 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2590.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2590/head:pull/2590

PR: https://git.openjdk.org/jdk11u-dev/pull/2590