Update for untyped btcutil consts.

ok @davecgh
Don't return a double pointer.

This commit has no effect on the effective functionality since Go
automatically deferences pointers, but there is no reason to have a
double indirection when returning the reply for getmininginfo.
Correct QueueNotification comment.

This comment incorrectly said QueueMessage instead of QueueNotification.
IMPORT PATH MODIFICATION CHANGESET
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Please use this changeset as the first one on top of the conformal codebase.
Note that if there are new imports, they need to be changed as part of this
changeset. In general, use "git rebase" on github.com/conformal's version
and apply this changeset first.