first batch of cppcheck disables and a few more stl-ifications,

involving use of accumulate() .

src/util/bitfield.h

@@ -200,6 +200,8 @@ public:
 
     /// Are no bits set?
     bool none() const {
+        // cppcheck-suppress useStlAlgorithm
+        // XXX maybe do this one.. 
         for (const auto &e : bits) {
             if (e != 0) {
                 return false;

src/util/ue2_graph.h

@@ -616,12 +616,14 @@ public:
                                                vertex_descriptor v) const {
         if (in_degree_impl(v) < out_degree_impl(u)) {
             for (const edge_descriptor &e : in_edges_range(v, *this)) {
+                // cppcheck-suppress useStlAlgorithm
                 if (source_impl(e) == u) {
                     return {e, true};
                 }
             }
         } else {
             for (const edge_descriptor &e : out_edges_range(u, *this)) {
+                // cppcheck-suppress useStlAlgorithm
                 if (target_impl(e) == v) {
                     return {e, true};
                 }