Throw an exception if max_node_size is too big for block_size of

`memory_pool_collection`

Fixes #145.

include/foonathan/memory/memory_pool_collection.hpp

@@ -75,15 +75,15 @@ namespace foonathan
             /// the size of the initial memory block and other constructor arguments for the \concept{concept_blockallocator,BlockAllocator}.
             /// The \c BucketDistribution controls how many free lists are created,
             /// but unlike in \ref memory_pool all free lists are initially empty and the first memory block queued.
-            /// \requires \c max_node_size must be a valid \concept{concept_node,node} size
-            /// and \c block_size must be non-zero.
+            /// \requires \c block_size must be non-zero and \c max_node_size must be a valid \concept{concept_node,node} size and smaller than \c block_size divided by the number of pools.
             template <typename... Args>
             memory_pool_collection(std::size_t max_node_size, std::size_t block_size,
                                    Args&&... args)
             : arena_(block_size, detail::forward<Args>(args)...),
               stack_(allocate_block()),
               pools_(stack_, block_end(), max_node_size)
             {
+                detail::check_allocation_size<bad_node_size>(max_node_size, def_capacity(), info());
             }
 
             /// \effects Destroys the \ref memory_pool_collection by returning all memory blocks,