Avoid using dd() in Prologue when --optimize-for-size.

Avoid using dd() in Prologue when --optimize-for-size.

When --optimize-for-size is true, the prologue generation outputs the
pre-aging code stub address directly to the instruction stream.  Previously
this was done using dd() which failed if there was any pending constant
pool entries left to be written.  This CL introduces an emit_code_stub_address()
for this purpose instead.

BUG=v8:2968
R=bmeurer@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=17485

[rmcilroy, 2013-10-28 18:12:08]

PTAL.

[Benedikt Meurer, 2013-10-31 10:23:43]

On 2013/10/28 18:12:08, rmcilroy wrote:
> PTAL.

LGTM

[Michael Achenbach, 2013-11-05 13:19:25]

Committed patchset #1 manually as r17485 (presubmit successful).