Fix CALL to use _C_LABEL.
gen/Makefile.inc
setjmp.S and sigsetjmp.S don't have lint stubs. Append them to
SRCS, not ASSRCS.
gen/__setjmp14.S, gen/__sigsetjmp14.S
some small optimizations
string/strcat.S string/strncat.S string/strncpy.S
use _C_LABEL when calling functions