[BUILD] better finding of library include dirs
[COSM] register abstract Action type
[ENH] Refactor RiemannSolver and PDE
[MERGE] Merge branch 'master' of github.com:coolfluid/coolfluid3

* 'master' of github.com:coolfluid/coolfluid3:
  [ADD] component type in print_info
  [ADD] signals in print_info (+ arguments and default values)
  [FIX] forgot to flush info
  [ADD] signals in print_info