(hmpp) Stop using doTransformActor()
(hmpp) Now uses singleton for CMake and Instance printers
(hmpp) Backend is almost fully updated

The last file to properly generate is the xxx_SELECTOR.c
(hmpp) Finalize migration to the new back-ends infrastructure

xxx_SELECTOR.c wrapper file is now printed
(hmpp) Fix tiny problem in printed code

Remove new line added before the last ';' when in a
local variable declaration