Fix fallout from a2e4be6ded508030a6c2a33919cbe8cb504382e0

Should fix build for iOS. There is no liblibotouch.a any more, and the only
library in $WORKDIR/LinkTarget/Library turns out to be the Android-only
liblo-bootstrap.a now.

Change-Id: Ia7b2f43db06536c05caee8d99130f44d5288705e