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Shared object libraries require complete symbol resolution
while archives do not.  The hci, btutil and a2dp hbtutil were
built as shared, but used the other archive libraries (e.g. gki).
To resolve all symbols in each of the so's, they stubbed out
data interfaces to the common structures.
(e.g. hci/include/utils.h)

This will unify all libraries and eliminate multiple definitions
of the same structure.

Change-Id: I2af9a3e8a87888cd007aaf0809cdfc09039cd460