[CVE-2009-0029] Remove __attribute__((weak)) from sys_pipe/sys_pipe2

Remove __attribute__((weak)) from common code sys_pipe implemantation.
IA64, ALPHA, SUPERH (32bit) and SPARC (32bit) have own implemantations
with the same name. Just rename them.
For sys_pipe2 there is no architecture specific implementation.

Cc: Richard Henderson <rth@twiddle.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index faf9ccd..f41ecc5 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -1088,8 +1088,8 @@
 	 ld	[%sp + STACKFRAME_SZ + PT_I0], %o0
 
 	.align	4
-	.globl	sys_pipe
-sys_pipe:
+	.globl	sys_sparc_pipe
+sys_sparc_pipe:
 	mov	%o7, %l5
 	add	%sp, STACKFRAME_SZ, %o0		! pt_regs *regs arg
 	call	sparc_pipe