travis; fix support matrix
fix ocaml 4.02 ppas
4.02 is now a system switch, no need to build it separately
Add a system variant of camlp4 that is a dummy package that checks
for the existence of a system installation of camlp4 if the compiler
is a 4.02 system compiler.

Add the converse relation to the non-system 4.02.0 package (which
should only be used in a custom switch)
Merge branch 'opam-1.2' of github.com:avsm/opam-repository into opam-1.2
Merge pull request #2540 from qoega/master

Added ocp-index.1.0.3 package
Merge pull request #2516 from camlspotter/for-pull-request

Updates of my softwares
fix osx travis switches
make compatible with 4.00.1
Fix available syntax on OPAM 1.1.x, via @samoht
Set OPAMSTRICT when testing packages
Further tweak the syntax to be OPAM 1.1 compatible and add installation help
Preinstalled needs to be a string, not bool
Attempt another permutation of preinstalled syntax
Another variant of preinstalled syntax from @samoht
fix ctrl+m not working on chromium
typo: camlp4.4.02.0+system should be preinstalled
correct osx 4.02 switch
check-camlp4 isnt executable
travis: render selected opam switch