Change some dependencies to shared libraries.

libbase, libfs_mgr, liblog and libbootloader_message are commonly
used shared libraries already installed on Android devices, we
should use them instead of the static version.

Also removed dependency on libz because puffin no longer depends on
it.
Also removed the -host suffix string replace, since we don't depend
on libraries with -host suffix anymore.

update_engine binary size decreased from 852K to 745K.

Bug: None
Test: update_engine still runs
Change-Id: I078c6687ee9ff3b9ed33982b3feea3d5a6aa6c1d