Many minor tweaks to ConsistencyFix code and related files to address minor review feedback.

build.xml
- fixed commenting out of 'protobuff' target

src/java/voldemort/client/protocol/admin/AdminClient.java
- add ClientConfig to constructor. This is needed for AdminStoreClient creation. It is confusing that we need both an AdminClientConfig and ClientConfig, but that is because the *ClientConfig code is so clumsy.
- changed ".stop()" methods to ".close()" to be consistent with other interfaces.

et cetera
- Updated all copyright notices that have changed on this branch since December. This touched a ton of files...
- annotated some TODOs with "(refactor)" to make refactoring todos easier to find.
Minor fix for change to AdminClient

src/java/voldemort/client/protocol/admin/AdminClient.java
- do not close down AdminStoreClient from queryKeys

test/unit/voldemort/client/AdminServiceBasicTest.java
- added some additional checks to test to confirm (non)existence of exceptions&values