When searching an object that was opened with RTLD_GLOBAL, search its DAG too.
When searching an object that was opened with RTLD_GLOBAL, search its DAG too.

PR:		bin/25059
Approved by:	jdp
MFC after:	3 weeks

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase