Our binaries depend on libstlport, which is not part of Solaris by default,
so we ship it as part of mysql packages.

The problem was that this dependency was not noted in the client library.

Fix: bacport more from:
   Bug#16555106 FIX BROKEN BUILD WITH SOLARIS/GCC 64BIT MODE

Specifically: add -R$ORIGIN/../lib when linking the client library.