Solidify iterable iteration.

Casting to Object[] will throw when a primitive array is used. Use the utilities provided by Array to iterate in a type-safe way.

Introduce @FieldMap.

The existing version was very broken. This standardizes behavior under a new annotation which defines how it applies to the request body.

Introduce @QueryMap and encoded variant.

The existing version was very broken. This standardizes behavior under two new annotations which define how they apply to the URL properly.

Reduce RequestBuilder allocations.

Do not initialize the header array unless it's used. When headers are specified by the methodInfo, initialize the ArrayList using the copy constructor.

Do not initialize the query StringBuilder unless it is used.

RequestBuilder: Support Iterable / Map for Field

Merge branch 'server-interface' of https://github.com/mhickman/retrofit into mhickman-server-interface

Deprecating Server and ChangeableServer.

AndroidLog: Added getTag() and logChunk() methods

… for easier subclassing.