ARM interpreter build improvements

[Edward Nevill]

OK. I set a build going last night. Unfortunately I had the JAVA_HOME
set so the build failed.

However, before it failed it had correctly created the "bytecodes_arm.s"
file and this file was binary identical to the previous "bytecodes.s".

cppInterpreter_asm.S had also correctly been modified to include
"bytecodes_arm.s" instead of bytecodes.s.

So, I am happy with this change. Please commit.

Regards,
Ed.

>Hi all,
>
>This patch causes the ARM interpreter's bytecodes file to be generated
>at build time rather than having a pregenerated version in the repo.
>Can someone with an ARM box please test this for me?  I've tested it as
>much as I can without one.
>
>Cheers,
>Gary