Begin a more aggressive refactoring of the Compiler interface.

Begin a more aggressive refactoring of the Compiler interface.

The plan is to use the CompilationInfo class to communicate inputs and
outputs to compilation pipeline phases, which each return a boolean
success/failure flag.

The intent is to make it easier to compose small pieces of the
pipeline without having to grow a custom function each time, each
taking a half dozen arguments.

This change modifies the very front end (the parser).

Committed: http://code.google.com/p/v8/source/detail?r=5581

[fschneider, 2010-10-04 10:14:05]

LGTM.