- extended signature with calling convention mode switches for fastcall (gnu), default, cdecl, stdcall, arm (arm), arm (thumb), syscall - made formatted call (dcV?{Call,Arg}F) interface use those calling convention mode signature specifications to begin with - extended callf testcode with one standard and one vararg call to test those cc mode switches

add_executable(callback_suite env.c handler.c sigstrings.c invokers.c do_test.c main.c print.c signature_utils.c)
target_link_libraries(callback_suite dyncallback_s)