MIPS: Add kExpectedFixedArrayInRegisterA2 message.

Port r19244 (08e0afd9)

BUG=
R=mvstanton@chromium.org, plind44@gmail.com

Review URL: https://codereview.chromium.org/159423003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19263 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove obsolete stack trace string in a message object.

The stack trace string is an ancient relic that is no longer being used.
We use the structured stack trace object instead.

R=bmeurer@chromium.org

Review URL: https://codereview.chromium.org/159013002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19264 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Traitify ParserBase and move functions there.

(Second try, with fixes. First try: https://codereview.chromium.org/149913006/ )

The long-term goal is to move all recursive descent functions from Parser and
PreParser into ParserBase, but first they need to be unified.

Notes:
- The functions moved in this CL: ParseIdentifier, ParseIdentifierName,
ParseIdentifierNameOrGetOrSet, ParseIdentifierOrStrictReservedWord.
- IOW, this CL removes Parser::ParseIdentifier and PreParser::ParseIdentifier
and adds ParserBase::ParseIdentifier, etc.
- Error reporting used to require virtual funcs; now error reporting is moved to
the Traits too, and ParserBase no longer needs to be virtual.
- I had to move PreParser::Identifier out of the PreParser class, because
otherwise PreParserTraits cannot use it in a typedef.

BUG=v8:3126
LOG=N
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/158913003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19265 ce2b1a6d-e550-0410-aec6-3dcde31c8c00