This hasn't worked because the path /mnt/apk/lib/<abi> wasn't in the
search paths of the linker namespace that the library is loaded (which
is the default namespace).
Fixing that by creating a new linker namespace 'microdroid' that
inherits the settings from the default namespace but adds the library
directory to the search paths, and loading the library from that
namespace.
Bug: N/A
Test: atest MicrodroidHostTestCases
Change-Id: I30c4ce86a48b80fa65e3b5ffeb90561fa1d2544e
microdroid_launcher is a very thin executable that loads a shared
library and execute the entry function (android_native_main). This is
used to execute a shared library in an APK that is shared from the host
Android.
Bug: 188513012
Test: atest MicrodroidHostTestCases
Change-Id: I0f98eba4c72601adaa27733dae6a51d3852301db
Jiyong Park