Libc update to simplify merge.

Bumping libc files for unsupported architectures, to simplify merging.
A bunch of small fixes:
 * in libutil update
 * the macro in endian.h
 * some undefined types due to clear separation from host.
 * Fix a warning for cdbr.c

Some modification which were required for the new build system:
 * inclusion path for const.h in sconst, still hacky
 * Removed default malloc.c which conflicts on some occasions.

lib/libc/arch/powerpc64/sys/brk.S

@@ -1,4 +1,4 @@
-/*	$NetBSD: brk.S,v 1.3 2006/07/07 06:50:06 ross Exp $	*/
+/*	$NetBSD: brk.S,v 1.4 2011/10/29 16:03:33 christos Exp $	*/
 
 #include "SYS.h"
 
@@ -37,4 +37,5 @@ ENTRY(_brk)
 	blr				# return 0
 
 1:
-	b	.__cerror
+	b	PIC_PLT(_C_LABEL(__cerror))
+

lib/libc/arch/powerpc64/sys/cerror.S

@@ -1,4 +1,4 @@
-/*	$NetBSD: cerror.S,v 1.1 2006/07/01 16:37:20 ross Exp $	*/
+/*	$NetBSD: cerror.S,v 1.4 2012/02/27 15:47:11 matt Exp $	*/
 
 #include <machine/asm.h>
 #include "SYS.h"
@@ -6,6 +6,9 @@
 #ifndef _REENTRANT
 	.globl	_C_LABEL(errno)
 #endif
+#ifdef PIC
+	.protected _C_LABEL(__cerror)
+#endif
 
 ENTRY(__cerror)
 #ifdef _REENTRANT

lib/libc/arch/powerpc64/sys/getcontext.S

@@ -1,4 +1,4 @@
-/*	$NetBSD: getcontext.S,v 1.3 2008/04/28 20:22:57 martin Exp $	*/
+/*	$NetBSD: getcontext.S,v 1.4 2011/10/29 16:03:33 christos Exp $	*/
 
 /*-
  * Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -33,7 +33,7 @@
 
 #if defined(SYSLIBC_SCCS) && !defined(lint)
 	.text
-	.asciz "$NetBSD: getcontext.S,v 1.3 2008/04/28 20:22:57 martin Exp $"
+	.asciz "$NetBSD: getcontext.S,v 1.4 2011/10/29 16:03:33 christos Exp $"
 #endif /* SYSLIBC_SCCS && !lint */
 
 #ifdef WEAK_ALIAS
@@ -50,4 +50,4 @@ ENTRY(_getcontext)
 	stw	%r3,(48 +  3 * 4)(%r5)		# arrange for return value 0
 	blr
 1:
-	b	.__cerror
+	b	PIC_PLT(_C_LABEL(__cerror))