no need to add regist_signal function
Merge branch 'master' of github.com:tlmquintino/coolfluid3

* 'master' of github.com:tlmquintino/coolfluid3: (117 commits)
  [FIX] detection of external plugins
  [FIX] lib namespace
  Allow finding plugins 2 levels deep, such as in repo with multiple plugins
  [ENH] renamed parse_and_deduce_variables
  [ENH] AnalyticalFunction improved error reporting, [ADD] parseAndDeduceVariables for auto-detecting variable names
  [COSM] fix few semantics warnings
  [ENH] allow for BC fields to be different from interior field
  [FIX] Roe average computation
  [ENH] Mesh create_space signals can take a vector of regions
  [FIX] possible memory bug
  [FIX] compilation with CF3_ENABLE_PROTO=OFF
  [FIX] Compilation after merge
  [FIX] Failing test
  [ENH] UFEM: Body force term for semi-implicit
  improved value initialization
  [ENH] UFEM: CFL computation uses maximum edge projection
  dump to file
  [FIX] UFEM: Better CFL computation
  [ENH] UFEM: Activate CFL computation
  [BUILD] also enable CF3_ENABLE_STDDEBUG for Clang
  ...