mesa/varray: set double arrays to non-normalised.
mesa/varray: set double arrays to non-normalised.

Doesn't have any effect in practice I don't think, but
CTS reads back using GetVertexAttrib.

This fixes: GL41-CTS.vertex_attrib_64bit.get_vertex_attrib

Cc: "11.0 11.1" <59f39c0db42d4479a46b02d4d2bc11120e37bb44@lists.freedesktop.org>
Reviewed-by: Ian Romanick <2b237cafb16dc45038e85df6c85e74e6d899eba9@intel.com>
Signed-off-by: Dave Airlie <f2295d84e358395675bc8031be58672073ae065e@redhat.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler