=head1 NAME
-memcached_callback_get memcached_callback_set
+memcached_callback_get memcached_callback_set - Get and set a callback
=head1 LIBRARY
=item MEMCACHED_CALLBACK_MALLOC_FUNCTION
This alllows yout to pass in a customized version of malloc that will be used instead of the builtin malloc(3) call.
+Your malloc must zero all memory.
The prototype for this is:
void *(*memcached_malloc_function)(memcached_st *ptr, const size_t size);