Allow * for the minor and build version number when specifying dependency versions

[Flavien]

Right now, it is only possible to use * for the version number of a dependency on the pre-release tag. It would be great if it also worked for the minor and build version number.

This works:

  "dependencies": {
    "Google.Protobuf": "3.0.0-*"
  },

But this doesn't:

  "dependencies": {
    "Google.Protobuf": "3.0.*"
  },