Updated hidl_test to reflect changes in hidl-gen.

1). importing binderized HALs as local shared libraries
2). updating functions to correspond to updated versions of
android.hardware.foo/bar@1.0
3). updated code dealing with hidl_vec, who's data members are now
private (no longer
'just' a struct)
4). included test/Android.mk, so you can 'make hidl_test'

Change-Id: I1bf7085f86247414c02417d4a5397c31c878ee9b
3 files changed