The build compare script, which was developed for the build-infra makefile rewrite project, has been unmaintained for a while. I would like to bring it to a basic usable level with current JDK 9. This includes various minor fixes and adjustments, mostly to the exception code. Some of the changes are:

* Remove 32bit solaris exceptions
* Remove the jre subdir in all exception file listings
* Rename variables and working dirs from j2sdk to jdk and j2re to jre.
* Update sed expressions used to filter certain comparisons to adapt to the output of new compiler and OS versions.
* Update exception file listings with added and removed filed from the images