Pom cleanup.

Clean up Server class a bit.

 * Enforce trailing slash contract declared in javadoc for api and web URLs.
 * Allow specifying of type in constructor.
 * Remove property-file-driven instantiation in favor of constructors.

Associate log messages with the request that caused them

Optimization: don't create a Date object just to get current time

Improve response time logging: show elapsed ms

Restore Gson 2.2.3-SNAPSHOT, which now supports serialization.

Serialization fix in Gson is here:
http://code.google.com/p/google-gson/source/detail?r=1177

Roll back gson change: it breaks serialization

Update Gson to 2.2.3-SNAPSHOT.

Adding a human-readable name to the Server interface

Support JSR-330 instead of Guice.

This change is *extremely* backwards and forwards incompatible
because it replaces Guice's @Named with JSR-330's @Named.
Programs that use the wrong @Named will not work at all. For
this reason it's critical that clients of retrofit also change
their @Named in sync with this update.

Make RestAdapter work with JSR-330 injectors other than Guice.

Conflicts:
	http/src/main/java/retrofit/http/RestAdapter.java

It still depends on Guice and works on Guice. But this baby step
will make it easier to use RestAdapter on another injector.

It still depends on Guice and works on Guice. But this baby step
will make it easier to use RestAdapter on another injector.

ANDROID-3631: PUTs don't have a content-type, don't NPE on them

Temporarily roll back to GSON 2.1.