RFR: 8020779 & 8026988 : Improvements to JTReg executable location handling

[Mike Duigou]

Hello all;

With JDK-8015068 only very recently pushed it's time for the next set of jtreg test/Makfile changes. These changes improve the configure script detection of jtreg and improve the handling of the specification variables in the jdk and langtools test/Makefiles. This changeset is also the first step in syncing the two test/Makefiles. More will follow which will further simplify the integration of testing into the overall build/test process.

http://cr.openjdk.java.net/~mduigou/JDK-8020779/0/webrev/

Mike