Reviewed by Maciej.

    Reviewed by Maciej.

        - fixed 28 Mozilla JavaScript tests

        * kjs/array_object.cpp: (ArrayProtoFuncImp::call): Check for undefined rather than
        checking the number of arguments for the join method.

        * kjs/lexer.cpp: (Lexer::lex): Parse hexadecimal and octal constants in doubles rather
        than integers, so we aren't limited to 32 bits.

        * kjs/math_object.cpp: (MathFuncImp::call): Get rid of many unneeded special cases in
        the implementation of the pow operation. Also simplied a case that was handling positive
        and negative infinity separately.

        * kjs/nodes.cpp: (ShiftNode::evaluate): Keep the result of shifts in a double instead of
        putting them in a long, so that unsigned shift will work properly.

        * kjs/number_object.cpp: Add the DontDelete and ReadOnly flags to the numeric constants.

        * kjs/operations.cpp:
        (KJS::isPosInf): Added an implementation inside APPLE_CHANGES that does not depend on the
        sign of isinf; our isinf function returns +1 even for negative infinity.
        (KJS::isNegInf): And again.
        (KJS::relation): Put in a nice simple implementation of comparison inside APPLE_CHANGES.
        Our floating point already handles the various infinity cases correctly.

        * kjs/regexp_object.cpp:
        (RegExpProtoFuncImp::call): Add missing return before Null() in Exec method.
        (RegExpObjectImp::arrayOfMatches): Put undefined rather than an empty string into the
        array in cases where we did not match.
        (RegExpObjectImp::construct): Set the DontDelete, ReadOnly, and DontEnum flags for
        "global", "ignoreCase", "multiline", and "source".

        * kjs/string_object.cpp: (StringProtoFuncImp::call): For the match method, turn a null
        string into undefined rather than an empty string. For the slice method, handle an
        undefined parameter for the limit properly as decribed in the specification, and add
        the limit to one case that didn't have the limit at all. For the methods that generate
        HTML strings, use lowercase tags instead of uppercase.

        * kjs/ustring.cpp:
        (KJS::UChar::toLower): Use u_tolower from the ICU library.
        (KJS::UChar::toUpper): Use u_toupper from the ICU library.
        (KJS::UString::append): Fix some math that caused a buffer overflow.
        (KJS::convertUTF16OffsetsToUTF8Offsets): Ignore negative numbers (-1 is used as a special
        flag) rather than converting them all to 0.
        (KJS::convertUTF8OffsetsToUTF16Offsets): Ditto.

        * tests/mozilla/jsDriver.pl: Fixed the relative links to point to our actual test files.

        * tests/mozilla/ecma/String/15.5.4.11-1.js: Fixed the Unicode table in this test to match
        the Unicode specification in a few cases where it was wrong before.
        * tests/mozilla/ecma/String/15.5.4.11-2.js: Ditto.
        * tests/mozilla/ecma/String/15.5.4.11-3.js: Ditto.
        * tests/mozilla/ecma/String/15.5.4.11-5.js: Ditto.
        * tests/mozilla/ecma/String/15.5.4.11-6.js: Ditto.
        * tests/mozilla/ecma/String/15.5.4.12-1.js: Ditto.
        * tests/mozilla/ecma/String/15.5.4.12-2.js: Ditto.
        * tests/mozilla/ecma/String/15.5.4.12-3.js: Ditto.
        * tests/mozilla/ecma/String/15.5.4.12-4.js: Ditto.
        * tests/mozilla/ecma/String/15.5.4.12-5.js: Ditto.

        * JavaScriptCore.pbproj/project.pbxproj: Link to libicu.

        * kjs/number_object.lut.h: Regenerated.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@7222 268f45cc-cd09-0410-ab3c-d52691b4dbfc