Added Disney BRDF to OSL BSDF list.
Added Disney BRDF to OSL BSDF list.

aytekaman/appleseed,Vertexwahn/appleseed,luisbarrancos/appleseed,gospodnetic/appleseed,luisbarrancos/appleseed,docwhite/appleseed,Vertexwahn/appleseed,pjessesco/appleseed,Aakash1312/appleseed,est77/appleseed,glebmish/appleseed,aytekaman/appleseed,docwhite/appleseed,dictoon/appleseed,glebmish/appleseed,aiivashchenko/appleseed,pjessesco/appleseed,dictoon/appleseed,aiivashchenko/appleseed,gospodnetic/appleseed,docwhite/appleseed,aytekaman/appleseed,Vertexwahn/appleseed,aytekaman/appleseed,Aakash1312/appleseed,gospodnetic/appleseed,appleseedhq/appleseed,gospodnetic/appleseed,docwhite/appleseed,pjessesco/appleseed,appleseedhq/appleseed,aiivashchenko/appleseed,Biart95/appleseed,Vertexwahn/appleseed,aytekaman/appleseed,aiivashchenko/appleseed,gospodnetic/appleseed,Biart95/appleseed,Biart95/appleseed,dictoon/appleseed,dictoon/appleseed,luisbarrancos/appleseed,aiivashchenko/appleseed,dictoon/appleseed,glebmish/appleseed,luisbarrancos/appleseed,Aakash1312/appleseed,Aakash1312/appleseed,pjessesco/appleseed,est77/appleseed,Vertexwahn/appleseed,Biart95/appleseed,Aakash1312/appleseed,appleseedhq/appleseed,glebmish/appleseed,est77/appleseed,appleseedhq/appleseed,appleseedhq/appleseed,est77/appleseed,glebmish/appleseed,est77/appleseed,docwhite/appleseed,luisbarrancos/appleseed,Biart95/appleseed,pjessesco/appleseed