Add UFconfig and/or SuiteSparse_config test to CMakeLists.txt

SuiteSparse 4 requires linking to libsuitesparseconfig.a.
Both SuiteSparse 3 and SuiteSparse 4 require an additional header
(either UFconfig.h or SuiteSparse_config.h) that is not found if it is
in a separate path. Therefore, add explicit checks.

Change-Id: I699902b5db4f1b7f17134b5a54f9aa681445e294