st/nine: Implement D3DRS_SPECULARENABLE
st/nine: Implement D3DRS_SPECULARENABLE

Implement fixed function D3DRS_SPECULARENABLE.
Fixes failing WINE tests in test_specular_lighting() (visual.c)

Signed-off-by: Patrick Rudolph <2af63f351b8bda7baf3a287b873bcd3ca66a59bb@das-labor.org>
Reviewed-by: Axel Davy <2b6ef604b998fb81662f85c329e4fc020eae8e5d@ens.fr>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler