Fixes an issue where sometimes native DLLs can't get their symbols resolved.
Fixes an issue where sometimes native DLLs can't get their symbols resolved.

As part of merging ETL files certain Image* events are added to add among other things
the GUID that uniquely identifies the DLL and its cooresponding PDB.
Previous to this change, we required that these Image* events be place BEFORE the
ImageLoad event they are for.

Turns out that is not always the case.   Fix it so that either order is fine.

vancem/perfview,vancem/perfview,vancem/perfview,vancem/perfview,vancem/perfview