Whitespace!
1) Didn't remove the io.druid files from client.  Remove those and make sure things compile
2) Switch DefaultObjectMapper to CommonObjectMapper
3) Create new DefaultObjectMapper in client that has Query stuff registered on it by default
Revert the previous commit.  After going down this path, I realized that extracting things enough to allow Queries to be extended without depending on Druid proper was going to lead down a very nasty path.  So, I've decided against that.  Extending queries will require a tight dependency on Druid proper.
1) Make it compile after merging with master
1) Remove PostAggregator and put it in druid-api
2) Remove io.druid files from client
1) Spell better
1) Add back segment-related interfaces and classes to new druid-segment module
OMG!!!  A lot of stuff has been moved.  Modules have been created and destroyed, but everything is compiling and unit tests are passing, OMFG this is awesome.!