added a java_field method for use in the jrubyc command. also added a runtime stub.
Merge pull request #1765 from jkutner/add_fields_to_java_gen

added a java_field method for use in the jrubyc command.
get ant back for tests
Merge branch 'jruby-1_7' of jruby.org:jruby into jruby-1_7
added jar dependencies to allow declare jar dependencies inside gemspec and download and install them during gem installation (works for bundler and gem install xyz)
fix comma
get the default hook lazy for bootstrapping
added jar dependencies to allow declare jar dependencies inside gemspec and download and install them during gem installation (works for bundler and gem install xyz)
get the default hook lazy for bootstrapping