Request for reviews .02 (M): 6829192: JSR 292 needs to support 64-bit x86

[Christian Thalinger]

Here is the updated webrev:

http://cr.openjdk.java.net/~twisti/6829192/webrev.02/

I also added the comment in
InterpreterMacroAssembler::get_cache_index_at_bcp() to the 32-bit
version.

-- Christian