- Adds the necessary passthru vars for bundler, bundix, etc. to accept
the package as a ruby.
- Adds the devEnv attribute, so that jruby.devEnv can be used to get
an environment with bundler and bundix installed.
Other executables all invoke jruby, and so don't need to be wrapped.
In some cases wrapping breaks the executables because one file is a ruby
script that directly loads the other (e.g. `gem` is a wrapper that loads
`jgem`). In this case, if the latter script has been wrapped by nix,
loading will fail.
Security release which only updates Rubygems to version 2.4.8. Rubygems 2.4.8
addresses CVE-2015-1855 to resolve some problems with wildcard matching of
hostnames.
See following entry for more information:
http://jruby.org/2015/06/10/jruby-1-7-20-1.html
