Small cmake configuration and documentation fixes

7c340a7 (Matthias Maier, 8 minutes ago)
   Update documentation of DEAL_II_WITH_* lists, and testsuite configuration

998142c (Matthias Maier, 12 minutes ago)
   remove obsolete functionparser definitions

c644945 (Matthias Maier, 14 minutes ago)
   Add an additional hint for opencascade