added renderer/meta/benchmarks source group.
added renderer/meta/benchmarks source group.

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