There's a TODO in the symbolizer in Resmoke to more robustly find the mongo shared library.

https://github.com/mongodb/mongo/blob/9595ffb2b2a270c2038f01737131d0d015464633/buildscripts/mongosymb.py#L68-L74

This currently is causing some pain as the symbolizer is difficult to set up and use by engineers. This TODO should be handled at some point to make the symbolizer easier to use.