libbinder_ndk: AServiceManager_checkService # apex

Feature parity, for faster loading times, etc..

Bug: N/A (requested for use in libnetd_resolv)
Test: ./runtests.sh, noting specifically:
[ RUN      ] NdkBinder.CheckServiceThatDoesntExist
[       OK ] NdkBinder.CheckServiceThatDoesntExist (0 ms)
[ RUN      ] NdkBinder.CheckServiceThatDoesExist
[       OK ] NdkBinder.CheckServiceThatDoesExist (0 ms)

Change-Id: I36b2a7420f5dd374e6b60898a778bbcedb9bd406