Strip prebuilt shared library by default.

Strip prebuilt shared library but not try adding gnu debuglink.
It would fail if you try run the adding gnu debuglink command if a
prebuilt is already stripped.

Bug: 17177288
Change-Id: If5811865715c2437e45fbd329983ef1212ef0109
(cherry picked from commit bfb52a2ec199a75e1a0e4e92148af0a6323c9f46)
4 files changed