[ Merge of http://go/wvgerrit/195850 ]
Since Widevine device builds now include APEX prebuilts,
shared library dependencies for the prebuilts are in
are in /apex/com.google.android.widevine/lib[64] rather
than /system/lib[64] or /vendor/lib[64]. When tests are
run not all the dependencies are present.
These changes include
* Statically linking missing dependencies
* Adding /apex/com.google.android.widevine/lib[64] to
the shared library path
* Searching for some of the test executables in
/data/nativetest[64]/vendor/
Bug: 329888778
Bug: 329891889
Bug: 329891175
Bug: 329891049
Test: ./build_and_run_all_unit_tests.sh
Change-Id: I067685cedc7701c4e6502bdac98b53e22b61ad1e
d926fb31ec