add <stdint.h> for ocaml - attempt to fix #1262
add <stdint.h> for ocaml - attempt to fix #1262

ellson/graphviz,ellson/graphviz,ellson/graphviz,ellson/graphviz,ellson/graphviz,ellson/graphviz,ellson/graphviz,ellson/graphviz,ellson/graphviz,ellson/graphviz,ellson/graphviz