Request for review of make changes for JDK-8041507, Java Access Bridge version strings need to be fixed

[Pete Brunet]

Please review the open part of the change for this fix:

JDK-8041507 Java Access Bridge version strings need to be fixed
https://bugs.openjdk.java.net/browse/JDK-8041507

Change:
Some variables needed to be set for use by the RC phase of the build of
jabswitch.exe.  The closed part of the fix is a straight backport of the
9 fix and includes use of variables set in the make file.  The open part
of the fix for the make changes could not be backported due to build
changes between 7 and 8/9 so a similar change was made to the 7 build
file and can be found in the patch.

Webrev:
http://cr.openjdk.java.net/~ptbrunet/JDK-8041507/webrev.00/

Thanks, Pete