Some intel drivers crash when areaScale shader with "large" array
is used. This adds a "reduced register" version of the areaScale
shader. We still use the first version of the shader for other
drivers and switch between the 2 implementations with a runtime
detection.

Change-Id: I1860f898c03b40a600eb1b41f7262719382a7171
Reviewed-on: https://gerrit.libreoffice.org/30571Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Tomaž Vajngerl <quikee@gmail.com>