Move more 'setup.ml' running to %build

Running it in %prep will fail if you don't have the tools installed
on the host.

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Move ocaml-inotify %prep to %build

Signed-off-by: David Scott <dave.scott@eu.citrix.com>
Merge pull request #554 from djs55/core-async2

Move more 'setup.ml' running to %build