Reviewed by Eric Seidel.

        https://bugs.webkit.org/show_bug.cgi?id=27305
        Implement WinCE-specific unicode layer.
        Written by George Staikos <george.staikos@torchmobile.com>
        with bug fixes by Yong Li <yong.li@torchmobile.com>
        refactored by Joe Mason <joe.mason@torchmobile.com>

        * wtf/Platform.h:
        * wtf/unicode/Unicode.h:
        * wtf/unicode/wince/UnicodeWince.cpp: Added.
        (WTF::Unicode::toLower):
        (WTF::Unicode::toUpper):
        (WTF::Unicode::foldCase):
        (WTF::Unicode::isPrintableChar):
        (WTF::Unicode::isSpace):
        (WTF::Unicode::isLetter):
        (WTF::Unicode::isUpper):
        (WTF::Unicode::isLower):
        (WTF::Unicode::isDigit):
        (WTF::Unicode::isPunct):
        (WTF::Unicode::toTitleCase):
        (WTF::Unicode::direction):
        (WTF::Unicode::category):
        (WTF::Unicode::decompositionType):
        (WTF::Unicode::combiningClass):
        (WTF::Unicode::mirroredChar):
        (WTF::Unicode::digitValue):
        * wtf/unicode/wince/UnicodeWince.h: Added.
        (WTF::Unicode::):
        (WTF::Unicode::isSeparatorSpace):
        (WTF::Unicode::isHighSurrogate):
        (WTF::Unicode::isLowSurrogate):
        (WTF::Unicode::isArabicChar):
        (WTF::Unicode::hasLineBreakingPropertyComplexContext):
        (WTF::Unicode::umemcasecmp):
        (WTF::Unicode::surrogateToUcs4):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@46911 268f45cc-cd09-0410-ab3c-d52691b4dbfc