(C) Imports the units before the actor merging to avoid conflicts.
(Merger) Moves parameters of the merged actors as well. Fix the merging
for HEVC.
(LLVM) Add classif/merging option.
(Merger) Removes the return instructions from the merged actions and
adds a single one at the end of the new created action.
(Merger) Initializes counter using assignments. Fixed actor merging with
LLVM backend.