(SSRC): Rename longjmp.S to __longjmp.S

(CSRC): Add clone.c

libc/sysdeps/linux/v850/Makefile

@@ -33,10 +33,10 @@ TARGET_MACHINE_TYPE=$(shell $(CC) -dumpmachine)
 CRT0 = crt0.S
 CRT0_OBJ = $(patsubst %.S,%.o, $(CRT0))
 
-SSRC = setjmp.S longjmp.S vfork.S
+SSRC = setjmp.S __longjmp.S vfork.S
 SOBJS = $(patsubst %.S,%.o, $(SSRC))
 
-CSRC = _mmap.c syscall.c
+CSRC = _mmap.c syscall.c clone.c
 COBJS = $(patsubst %.c,%.o, $(CSRC))
 
 OBJS = $(SOBJS) $(COBJS)