fix the older mirage libraries with upper bounds
add a package provinding a bytes module for ocaml < 4.02 and an empty package for ocaml >= 4.02
More complete description
Merge pull request #2131 from chambart/bytes

Add a package provinding a bytes module for ocaml < 4.02
Merge pull request #2139 from samoht/master

remove temp patience package
Bytes 1.1

Add functions from Bytes missing in String
Add ocplib-endian 0.6, version compatible with -safe-string
Updated Lacaml
Merge pull request #2142 from mmottl/master

Updated Lacaml
Merge pull request #2141 from chambart/bytes

ocplib-endian 0.6 (compatible with -safe-string) and bytes 1.1
Sync latest compiler pull requests
constrain websocket to ocplib-endian 0.4

will provide a proper fix to websocket next week.
Merge pull request #2144 from andrewray/websocket-temp-fix

constrain websocket to ocplib-endian 0.4
Merge pull request #2143 from bactrian/sync-prs-1400886001

Sync OCaml compiler PRs
ocamlviz: add depext on autoconf
Merge pull request #2145 from avsm/ocamlviz-depext

ocamlviz: add depext on autoconf
humane-re 0.0.3
add ounit to deps humane_re
planck: fix uninstall
spotlib: fix uninstall