[TxMt] text coloring + function declarations spanning more than one line

[shin kurokawa]

In C++ mode, what is the correct method to modify
tmthemes such that function declarations written like :

  TF Funk(T1 arg1, T2 arg2)

...and...

  TF Funk(
         T1 arg1,
         T2 arg2,)

...or...

  TF
   Funk(
         T1 arg1,
         T2 arg2,)

..are rendered identically? or is that even possible?
(TF above is the function return type, possibly more than one
word to include a storage type. T1/T2 above are argument types,
again maybe augmented by an additional word(s) like const or
default assignments).

TIA,
-Shin