move test into right package
[swift2thrift] Pass javadoc comments through

Adds a ThriftDocumentation annotation that can be applied to services,
structs, methods, fields and enums.
Also introduces a JavaDocProcessor annotation processor that will save
javadocs on ThriftService-, ThriftStruct- and ThriftEnum-annotated classes
to specially-named mirror classes with ThriftDocumentation annotations,
e.g., the javadocs for Foo are saved to Foo$swift_meta.

Original code by tim <twilliamson@gmail.com>, modified, bugfixed and
extended by me.
[swift2thrift] Maintain stable order of ThriftService methods

Method ordering in the generated .thrift file is defined by the first
rule below that matches:
- Explicit @ThriftOrder annotation on the method
- Same as order of definition in the Java source if compiled with
  swift-javadoc's jar in the classpath
- Sorted lexicographically
[swift2thrift] Allow specifying non-swift namespaces

E.g. running with "-namespace cpp blahblah" will add the line
"namespace cpp blahblah" to the generated .thrift file
[swift2thrift] Addded README.md
Stop getRemoteAddress from doing a reverse DNS lookup

Reverse DNS lookup for getRemoteAddress slows down services that use this method a lot
ContextChain code cleanup
Change event handler exception types to Throwable
Fix ordering of calling ContextChain.done() during async client calls
Clean up injected ThriftServerTimer instance
Make the server timer thread a daemon thread

No reason for the timer thread alone to keep the process alive
Upgrade to facebook-oss-pom v7
ThriftServiceProcessor implements asynchronous processing