Converting files containing CRLF line terminators

Patch files with CRLF terminators are not correctly handled by FreeBSD's
patch(1). A package description file also had a CRLF terminator and was also
converted.
update camlzip patch

- build and install cmxs
- install cmx
Merge branch 'camlzip' of git://github.com/hhugo/opam-repository into final-changes
Merge branch 'master' of git://github.com/acieroid/opam-repository into final-changes
Merge pull request #1561 from mirage/final-changes

Final changes to flush Travis backlog