* Use new RegExp parser.

Use new RegExp parser for syntax checking patterns and selecting atom matching.
Delay compilation of JSCRE regexps until their first use.
Includes previous change-list, which got committed to the wrong branch.

[Lasse Reichstein, 2008-10-31 12:50:36]

Incremental code review.
This CL also contains all the changes of CL 8760, which got committed to the
wrong branch.

[Christian Plesner Hansen, 2008-10-31 13:39:33]

Lgtm.

http://codereview.chromium.org/8765/diff/1/4
File regexp2000/src/jsregexp.cc (right):

http://codereview.chromium.org/8765/diff/1/4#newcode340
Line 340: ASSERT(re->TypeTag() == JSRegExp::JSCRE);
Use ASSERT_EQ(a, b) instead of ASSERT(a == b) since it displays the values when
it fails.

http://codereview.chromium.org/8765/diff/1/4#newcode509
Line 509: ASSERT(regexp->TypeTag() == JSRegExp::JSCRE);
Ditto

http://codereview.chromium.org/8765/diff/1/4#newcode536
Line 536: ASSERT(regexp->TypeTag() == JSRegExp::JSCRE);
Ditto