and selection.  Optimized selection point calculation by
        only doing characters measurements once.

        * khtml/rendering/font.cpp:
        (Font::floatCharacterWidths):
        * khtml/rendering/font.h:
        * khtml/rendering/render_text.cpp:
        (TextSlave::checkSelectionPoint):
        (RenderText::position):
        * kwq/KWQFontMetrics.mm:
        (QFontMetrics::width):
        (QFontMetrics::floatWidth):
        (QFontMetrics::floatCharacterWidths):
        * kwq/KWQPainter.mm:
        (QPainter::drawText):
        * kwq/WebCoreTextRenderer.h:
        * kwq/qt/qfontmetrics.h:

        Adding padding and widths buffer to our canonical measurement
        method.  The padding argument is used to 'pad' measurements in
        that same way that drawing is padded.  The widths parameter
        allows a caller to pass a buffer to get all the individual
        character widths for the run of characters in the string.

        * Misc.subproj/WebStringTruncator.m:
        (+[WebStringTruncator rightTruncateString:toWidth:withFont:]):
        (+[WebStringTruncator centerTruncateString:toWidth:withFont:]):
        * WebCoreSupport.subproj/WebTextRenderer.h:
        * WebCoreSupport.subproj/WebTextRenderer.m:
        (-[WebTextRenderer widthForCharacters:length:]):
        (-[WebTextRenderer drawGlyphs:numGlyphs:fromGlyphPosition:toGlyphPosition:atPoint:withPadding:withTextColor:backgroundColor:]):
        (-[WebTextRenderer floatWidthForCharacters:stringLength:characterPosition:]):
        (-[WebTextRenderer floatWidthForCharacters:stringLength:fromCharacterPosition:numberOfCharacters:]):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@2062 268f45cc-cd09-0410-ab3c-d52691b4dbfc