RFR (S) 8217879: hs_err should print more instructions in hex dump

[Aleksey Shipilev]

RFE:
  https://bugs.openjdk.java.net/browse/JDK-8217879

Fix:
  http://cr.openjdk.java.net/~shade/8217879/webrev.01/

"Instructions" block is useful when following up on hs_errs that happened without the disassembler
attached, which is usually the case coming from users. One can use the disassembler [1] to look
around the code that was crashing, and get extended conjectures why the error happened, including
rewinding a bit of history. However, current window is sometimes too small to infer enough context.
I propose we extend it!

The patch also commons the paths across OS/Arch-specific files to that current "delta" appears less
of the magic number. Plus, it adds cr()-s for consistency across the arches and within the methods.

Testing: eyeballing hs_errs from artificial crashes, Linux x86_64 build, jdk-submit

Thanks,
-Aleksey

[1] I use https://onlinedisassembler.com, for example.