Unbreak pm3-base:
* extend files/patch-l1 and files/patch-l2 to match gethostname(3)
prototype on 5.x and above
* add patch for language/modula3/m3compiler/m3cc/gcc/m3.c to make it use
stdarg.h instead of varargs.h
PR: ports/85038
Submitted by: Vasil Dimov <vd@datamax.bg>
