This patch extracts into BitUtils byte manipulation helper methods
and unsigned type manipulation helper methods from ApfFilter into
an independent and reusable structure.
Test: $ runtest frameworks-net
Change-Id: I0f33af10457a63dbde5983f14353a79b8cd877d9
This groups them together with the rest of the networking unit
tests. It also speeds up compile/test cycles ("runtest -x" of one
file goes from 1m15s to 30s).
Test: runtest frameworks-net passes on internal tree
Change-Id: I53cb0c51355fe4b4b30e451fa09fbbf58da39efd