Move i18n-related runtime functions into a separate file.

Move i18n-related runtime functions into a separate file.

R=bmeurer@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=24202

[Yang, 2014-09-24 11:34:36]

On 2014/09/24 11:33:09, Yang wrote:

Eventually we want to move all implementations out of runtime.cc into separate
files. For the array of runtime functions to work, I inserted a list of runtime
function headers at the start of runtime.cc. To do this, I made a distinction
between runtime functions that return Object* and ones that return ObjectPair.
The rest of changes are mechanical.

[Benedikt Meurer, 2014-09-24 11:36:24]

LGTM (rubber-stamped)

[Yang, 2014-09-25 07:17:02]

Committed patchset #2 (id:10001) manually as 24202 (presubmit successful).