Start update to 1.6.4. Set versions, fix build script for new library paths. This won't compile.
Start update to 1.6.4. Set versions, fix build script for new library paths. This won't compile.

Signed-off-by: Ross Allan <ca2c77e14df1e7ee673215c1ef658354e220f471@gmail.com>

nallar/TickThreading