LCD Text shader graphics transform problems.

* When a scale is applied to a Text node, glyphs are produced in
device space and the drawing to the graphics should not apply
the transform. However it appears this does happen somewhere
in the LCD shader code path. It does not happen in the greyscale
code path.

* the "x,y" parameters in BaseShaderGraphics.drawString()
  are mapped to device space in the function, but the LCD code
  path then uses them as if they are in user space.
  This appears likely to be the cause of incorrectly placed
  text when there's a scaling transform

* The usage of FontStrike.getStringBounds() in the shader code
   path appears to be part of the calculation as to what area
   of the destination to sample. Because these bounds
  are in the font's coordinate system (user space) it needs to
  account for the graphics transform. The calculation also
  mixes the device x,y (see above) with these user space values.
  Its not clear what role this has in the additional application of
  the transform to the glyphs.