Fix for warnings with latest intel compiler.

Also updates modparser to point to the latest master.

modparser @ a3aa02b2

-Subproject commit ad8d926fd4a3e92cdcfb7b77c527550f859496d2
+Subproject commit a3aa02b2888a23aa9dbd2244ef3709dd01fc6c31

src/util/range.hpp

@@ -140,7 +140,7 @@ struct range {
         return is_forward_iterator<U>::value && left != right && std::next(left) != right;
     }
 
-    static const bool is_splittable_in_proportion() {
+    static constexpr bool is_splittable_in_proportion() {
         return is_forward_iterator<U>::value;
     }
 #endif