Specialized string equality based on representation

- Specialized slow-case string equality nine ways based on the
  underlying string representation of the two strings involved.
- Renamed ascii and two byte string classes to sequential ascii and
  sequential two byte, and renamed IsAscii and friends to
  IsAsciiRepresentation.  This is to make a clear distinction between
  strings with an ascii/two-byte representation, of which there is
  four, and flat sequential ascii/two-byte string.

[Erik Corry, 2008-10-08 12:59:53]

http://codereview.chromium.org/6342/diff/1/8
File src/objects.h (right):

http://codereview.chromium.org/6342/diff/1/8#newcode3168
Line 3168: inline int AsciiStringSize(Map* map);
Needs renaming

http://codereview.chromium.org/6342/diff/1/8#newcode3179
Line 3179: inline void AsciiStringReadBlockIntoBuffer(ReadBlockBuffer* buffer,
Ditto

http://codereview.chromium.org/6342/diff/1/8#newcode3182
Line 3182: inline const unibrow::byte* AsciiStringReadBlock(unsigned* remaining,
Ditto

http://codereview.chromium.org/6342/diff/1/8#newcode3203
Line 3203: const uint16_t* TwoByteStringGetData(unsigned start);
Ditto

http://codereview.chromium.org/6342/diff/1/8#newcode3211
Line 3211: inline int TwoByteStringSize(Map* map);
Ditto

http://codereview.chromium.org/6342/diff/1/8#newcode3222
Line 3222: inline void TwoByteStringReadBlockIntoBuffer(ReadBlockBuffer* buffer,
Ditto

[Erik Corry, 2008-10-08 13:05:00]

LGTM