Core: move core symlink to a place Warbler will recognize
Retrieval: fix bug introduced in label changes
Core: JRuby fixes - don't use YAJL
Sink: don't require router file any more
Router: don't use YAJL
Core: update tcp://*:8126 URIs to use tcp://0.0.0.0 as they should.
Test: don't include native code on CRuby
Tests: add new trivial retrieval-server Rack test
Tests: add retrieval test for well-specified non-label query
Retrieval: fix problems in label queries, not fully tested.  Add early label-query test.
Retrieval: fix name_matches? and cleaning method invocation for negative label assertions
Retrieval test: many more specifics for heavily-specified label lookup
Retrieval: better label query test, debugging to fix test
Retrieval: fix code-merge error from adding in label query
Schema: multiple comment additions/fixes
Retrieval test: even more fine-grained label test
Tests: Hastur-units was failing because of top-level constant name collisions.  Rename constants.