scripts/functions: use patch -i instead of IO redirection

This makes the patch name show up on the command line
logged by CT_DoExecLog so it's easier to see
what is going on. The -i for patch is specified
by Posix and supported by GNU patch and busybox patch.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
[yann.morin.1998@free.fr: remove now-useless debug message]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <20121030103620.GB8303@sig21.net>
Patchwork-Id: 195418

--- a/bfd/elf32-arm.c

+++ b/bfd/elf32-arm.c

@@ -12408,7 +12408,8 @@ elf32_arm_check_relocs (bfd *abfd, struc

 	  /* If the symbol is a function that doesn't bind locally,

 	     this relocation will need a PLT entry.  */

-	  root_plt->refcount += 1;

+	  if (root_plt->refcount != -1)

+	    root_plt->refcount += 1;

 	  if (!call_reloc_p)

 	    arm_plt->noncall_refcount++;