Fix up API definitions in master.

9.xml -- the GB 2.3 API being released.
10.xml -- a place holder for the GB 2.4 API that is in progress.
11.xml -- the HC API that is in progress.

Currently 10.xml is just a copy of 9.xml, but it will get updated
as changes are made to GB.

Note there is a big unfortunate result here, that any new GB APIs
that are added need to be hand-merged to 10.xml.  Joy.

Change-Id: Id8d2ab3906ecabc968092fc1dfb568cc29efd7ff