Deprecate BUILD_HOST_SHARED_LIBRARY

There are no common users left.

Also add some sanity checks to ensure that people don't attempt to use
LOCAL_IS_HOST_MODULE := true with the BUILD_(STATIC|SHARED)_LIBRARY
module types (I'm not sure it would work, but it definitely wouldn't be
good).

Bug: 130722971
Test: treehugger
Test: check the warnings on the build_test builds from treehugger
Change-Id: I3e571ef80379955149adbceff4500e51dfa016c6