This commit contains the entire btcrpcclient repository along with
several changes needed to move all of the files into the rpcclient
directory in order to prepare it for merging. This does NOT update btcd
or any of the other packages to use the new location as that will be
done separately.
- All import paths in the old btcrpcclient files have been changed to
the new location
- All references to btcrpcclient as the package name have been changed to
rpcclient
This updates all code to make use of the new chainhash package since the
old wire.ShaHash type and related functions have been removed in favor
of the abstracted package.
Also, while here, rename all variables that included sha in their name
to include hash instead.
Since the example illustrates callbacks for the OnBlockConnected and
OnBlockDisconnected callbacks, also register for the notifications with
NotifyBlocks.
While here, document the fact that most of the callbacks require
registration.
