wined3d: Use a bitmask to store which bool and int constants are set.

Note that constants_set was never actually NULL for
shader_glsl_load_constantsB() and shader_glsl_load_constantsI().

dlls/wined3d/wined3d_private.h

diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index dfbe6c7..0ad75c9 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -1662,12 +1662,12 @@
         BOOL                      clipplane[MAX_CLIPPLANES];
         BOOL                      vertexDecl;
         BOOL                      pixelShader;
-        BOOL                      pixelShaderConstantsB[MAX_CONST_B];
-        BOOL                      pixelShaderConstantsI[MAX_CONST_I];
+        WORD                      pixelShaderConstantsB;
+        WORD                      pixelShaderConstantsI;
         BOOL                     *pixelShaderConstantsF;
         BOOL                      vertexShader;
-        BOOL                      vertexShaderConstantsB[MAX_CONST_B];
-        BOOL                      vertexShaderConstantsI[MAX_CONST_I];
+        WORD                      vertexShaderConstantsB;
+        WORD                      vertexShaderConstantsI;
         BOOL                     *vertexShaderConstantsF;
         BOOL                      scissorRect;
 } SAVEDSTATES;