Have tuareg mode set the compile command

to utilize corebuild via opam
Improve ocaml module documentation

Add some documentation about environment assumptions, and correct some
grammar issues.
change desktop setting
some setting for calendar
update org journal setting
Merge pull request #724 from RadicalZephyr/ocaml

Ocaml improvements
use frame-cmds with smartrep control frame
change calc launcher binding
Merge remote-tracking branch 'refs/remotes/bbatsov/master'

* refs/remotes/bbatsov/master:
  Improve ocaml module documentation
  Have tuareg mode set the compile command
clean gpg and *cal buffers
Remove custom erc notifications code

It should be replaced with the use of something like
https://github.com/jwiegley/alert
Merge remote-tracking branch 'refs/remotes/bbatsov/master'

* refs/remotes/bbatsov/master:
  Remove custom erc notifications code