Update ocaml-re to 1.2.2

Note:

ocaml-re has a README.md (not simply a boring old README)

Signed-off-by: David Scott <dave.scott@citrix.com>
Update ocaml-lambda-term to 1.6, utop to 1.12

Signed-off-by: David Scott <dave.scott@citrix.com>
Update react to 1.1.0 and lwt to 2.4.5

Note:

ocaml-react has CHANGES.md (not a boring CHANGES)

Signed-off-by: David Scott <dave.scott@citrix.com>
ocaml-react: the README is now README.md

Signed-off-by: David Scott <dave.scott@citrix.com>
ocaml-lambda-term: remove unused %exclude

Signed-off-by: David Scott <dave.scott@citrix.com>
Merge pull request #474 from djs55/trusty-updates-partIV-the-new-hope

Trusty updates: part IV the new hope