Added tinting support to textured_shadowed shader
Added tinting support to textured_shadowed shader

Textured_shadowed shader, (used by everything that can have
shadows cast on it) was not correctly applying the tint uniform,
so things that depended on the tint (i. e. the editor selection)
were not showing up.

Change-Id: I4d9187f37ac4584f7c91c501844212bb07f7b5f3

google/zooshi,google/zooshi,google/zooshi,google/zooshi,google/zooshi