Experimental: add a function to the API for recording assembler...

Experimental: add a function to the API for recording assembler
positions to record the start of each compiled function.

This seemed easiest, since the deferred code expects a statement
position and there is not necessarily a statement in the body to pass
to CodeForStatement.

Since it's on the branch, it is not ported to the ARM but will be
before we merge back to bleeding_edge.

Committed: http://code.google.com/p/v8/source/detail?r=1158

[Kevin Millikin (Chromium), 2009-01-26 15:08:56]

This changes fixes snapshot compilation on the experimental code generator
branch.

[Søren Thygesen Gjesse, 2009-01-26 15:16:54]

On 2009/01/26 15:08:56, Kevin Millikin wrote:
> This changes fixes snapshot compilation on the experimental code generator
> branch.

LGTM