Allow redirecting disassembly and deoptimization traces into a file.

Allow redirecting disassembly and deoptimization traces into a file.

This is controlled by two flags:

--redirect_code_traces
--redirect_code_traces_to=<filename>

When redirection is enabled but --redirect_code_traces_to is not specified traces are written to a file code-<pid>-<isolate>.asm. This mangling scheme matches hydrogen.cfg and allows easy discovery of compilation artifacts in a multi-V8 environment (e.g. when compilation is traced from inside Chromium).

D8 defines --redirect_code_traces_to=code.asm similar to hydrogen.cfg redirection.

BUG=
R=danno@chromium.org

Committed: http://code.google.com/p/v8/source/detail?r=17571

[Vyacheslav Egorov (Google), 2013-10-25 16:13:25]

This is the first CL among those that I mentioned.

Please take a look.

[danno, 2013-11-06 14:10:49]

lgtm

[Vyacheslav Egorov (Chromium), 2013-11-07 16:35:42]

Committed patchset #1 manually as r17571 (presubmit successful).