Merge pull request #1758 from mirage/master

cowabloga 0.0.5 depends on cstruct
blogs.janestreet.com -> ocaml.janestreet.com
Merge pull request #1760 from janestreet/core-111.03.00

blogs.janestreet.com -> ocaml.janestreet.com
Fix opam2web cow constraint to exclude 0.9
Merge pull request #1762 from dsheets/master

Fix opam2web cow constraint to exclude 0.9
Merge pull request #1763 from mirage/master

+github.0.8.1
opium 0.4.0
opam2web: add bug-reports
+opam2web.1.3.1
Merge pull request #1766 from dsheets/master

+opam2web 1.3.1
Merge pull request #1765 from rgrinberg/opium_040

opium 0.4.0
install reins.cmi (Closes #1755)
+ ocurl 0.7.0
Merge pull request #1768 from camlunity/ocurl

+ ocurl 0.7.0
Merge pull request #1767 from camlunity/master

install reins.cmi (Closes #1755)
Merge pull request #1769 from mirage/master

+crunch.1.3.0
spelll 0.1
small fixes to Spelll's package
Merge pull request #1761 from c-cube/master

spelll 0.1
re2 111.01.01