syscall: mark rawClone as no_split_stack

    
    Reviewed-on: https://go-review.googlesource.com/30955

From-SVN: r241072

gcc/go/gofrontend/MERGE

-7e4543d050339e113e6278fd442d940c0f1a5670
+c18d9f0e7270144ebd1f67d85995f434bbdab0b0
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

libgo/go/syscall/clone_linux.c

@@ -10,7 +10,10 @@
 
 #include "runtime.h"
 
-long rawClone (unsigned long flags, void *child_stack, void *ptid, void *ctid, struct pt_regs *regs) __asm__ (GOSYM_PREFIX "syscall.rawClone");
+long rawClone (unsigned long flags, void *child_stack, void *ptid,
+	       void *ctid, struct pt_regs *regs)
+  __asm__ (GOSYM_PREFIX "syscall.rawClone")
+  __attribute__ ((no_split_stack));
 
 long
 rawClone (unsigned long flags, void *child_stack, void *ptid, void *ctid, struct pt_regs *regs)