revert common uClibc vfork implementation. the new one does not work with cris architecture

toolchain/uClibc/patches/revert-vfork.patch

@@ -0,0 +1,41 @@
+diff -Nur uClibc-0.9.32-rc1.orig/libc/sysdeps/linux/common/vfork.c uClibc-0.9.32-rc1/libc/sysdeps/linux/common/vfork.c
+--- uClibc-0.9.32-rc1.orig/libc/sysdeps/linux/common/vfork.c	2010-12-17 20:05:17.000000000 +0100
++++ uClibc-0.9.32-rc1/libc/sysdeps/linux/common/vfork.c	2010-12-31 14:28:19.259431750 +0100
+@@ -4,30 +4,24 @@
+  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+  */
+ 
++/* Trivial implementation for arches that lack vfork */
+ #include <unistd.h>
+ #include <sys/types.h>
+ #include <sys/syscall.h>
+ 
+-extern __typeof(vfork) __vfork attribute_hidden;
+-
+-#ifdef __NR_vfork
+-
+-# define __NR___vfork __NR_vfork
+-_syscall0(pid_t, __vfork)
+-
+-weak_alias(__vfork,vfork)
+-libc_hidden_weak(vfork)
+-
+-#elif defined __ARCH_USE_MMU__ && defined __NR_fork
++#ifdef __ARCH_USE_MMU__
+ 
+-/* Trivial implementation for arches that lack vfork */
++#ifdef __NR_fork
++/* libc_hidden_proto(fork) */
+ 
++extern __typeof(vfork) __vfork attribute_hidden;
+ pid_t __vfork(void)
+ {
+     return fork();
+ }
+-
++/* libc_hidden_proto(vfork) */
+ weak_alias(__vfork,vfork)
+ libc_hidden_weak(vfork)
++#endif
+ 
+ #endif