`rake gem` - make sure .jar is used when it's already there + minor updates
next development SNAPSHOT is 1.1.17
update jruby maven plugins and bundler's version
allow PATCH verb to be processed by the ruby application

Sponsored by: Lookout, Inc.

Conflicts:
	src/main/java/org/jruby/rack/UnmappedRackFilter.java
	src/spec/ruby/rack/filter_spec.rb