This patch contains two larger improvements to compare.sh:
* Start by doing the binary comparison. This is often the most interesting part, and for interactive sessions, much time is saved is this is done first (after the quick sanity check of the file tree).
* Allow not all parts (like the JRE image and sec-bin.zip) to be present. This also speeds up tests by making "make jdk-image" as the prerequisite for running comparison.

A fix for the hex disasm filter on solstudio is also included.