teach opamGlobal and opamSystem.patch about NetBSD and DragonFlyBSD
Merge pull request #480 from adegroote/more_bsd_support

Teach opamGlobal and opamSystem.patch about NetBSD and DragonFlyBSD
Merge branch 'master' of github.com:OCamlPro/opam
Update the HTML docs
Update the man pages
Update the tutorials
New tentative fix for #471 (woud be easier with a test machine)
Remove 'opam remote' as it is replaced by 'opam repository' since 0.9.0

Remark: if you find 'repository' too long, you can use 'opam repo' instead (as cmdliner looks for matching commands with the same prefix)
Fix #471
Update dev-manual

This should fix #468
Refactoring
Reindent (no other changes)
Add a 'tags' field in OPAM files.

This should help resolving part of #483
Add (very basic) man pages for opam-mk-repo and opam-check

This should fix #432
Update to latest version of ocp-build

https://github.com/OCamlPro/typerex/commit/aa9b6c733104df6c0b6fc7f1551d4dadeb26744b

Fix #484
Fix copy/paste error (thx to @dbuenzli)
The new ocp-build works well on cygwin, so OPAM will compile fine there.
Add missing file to boostrap with ocp-build (regression introduced in 11adfc626c09f770e6e45c006f6d7adb339b28f9)

Fix #487
Make 'opam config var switch' print the current switch

This can be useful when substituting variables in .opam files.
Fix #360

OPAM now fails if curl returns an error (it should already work properly when using wget).

It will also help fixing #452 and #467