The `GtestImage.gmk` is updated to use separate macro calls in case the runtime libraries are not in the same directory.
------------- Commit messages: - 8299789: Compilation of gtest causes build to fail if runtime libraries are in different dirs Changes: https://git.openjdk.org/jdk/pull/11899/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11899&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8299789 Stats: 14 lines in 1 file changed: 12 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/11899.diff Fetch: git fetch https://git.openjdk.org/jdk pull/11899/head:pull/11899 PR: https://git.openjdk.org/jdk/pull/11899
