Revert "add a temporary restriction on the latest Core to only build on Linux until the next point releases fixes the issue."

This reverts commit 2ff7a6aa7d8510732812601efdcb36f7af0bb3e7.
Add oasis dependency to utop 1.3
disable -warn-error for all Core's 109.07.00 packages
Merge pull request #357 from janestreet/master

Disable -warn-error for Core packages
Speculative package definition for PPrint.
Checksum changed.
Split the rules for pprint in two steps.

- The TO_INSTALL Makefile variable is computed at the beginning of a call to
make, so it doesn't work in one call because the cmx files are not there
initially.
Merge pull request #358 from protz/my

Add PPrint to the list of OPAM packages
3.11.2 compiler.
update required version
Merge branch 'master' of github.com:OCamlPro/opam-repository
Remove broken utop
dose: fix "unix" duplication
Merge pull request #361 from lefessan/typerex

dose: fix "unix" duplication
Merge pull request #359 from smimram/master

OCaml 3.11.2
Fix 3.11.2 patch url