Remove LaTeX/PDF build rules
Use Findlib to find bisect
Rework `arakoon_version.ml` creation

* Query dependencies using `Findlib` instead of spawning out
* Use built-in functionality of `Ocamlbuild` to generate a file
* Simplify 'templating'
Merge myocamlbuild sections
Use built-in `thread` OCamlbuild tag
Move 'variable' settings to top of the module
Add `quickcheck` to dependencies

As pointed out by @domsj in #413.
Merge branch 'clean-myocamlbuild' into 1.7

* clean-myocamlbuild:
  Add `quickcheck` to dependencies
  Move 'variable' settings to top of the module
  Use built-in `thread` OCamlbuild tag
  Merge myocamlbuild sections
  Rework `arakoon_version.ml` creation
  Use Findlib to find bisect
  Remove LaTeX/PDF build rules

Conflicts:
	myocamlbuild.ml

See: https://github.com/Incubaid/arakoon/pull/413