PR#5945: Mix-up of Minor_heap_min and Minor_heap_max units

git-svn-id: http://caml.inria.fr/svn/ocaml/version/4.01@13899 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
PR#6072: configure does not handle FreeBSD current (i.e. 10) correctly

git-svn-id: http://caml.inria.fr/svn/ocaml/version/4.01@13900 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02