The CoreText implementation dropped the support of DXArray
more exactly ignored the values provided in it.
And try to approximate the result by assuming that
all it does is full justification... which is not quite right

This ut the feature back, buy handing the glyph drawing
directly, rather than defering to CoreText CTLineDraw
to control the position of each Glyph

Change-Id: Ibe0cfe789d3be441c012d8ac1104d939204a591c