NetBSD re-synchronization of the source tree

This brings our tree to NetBSD 7.0, as found on -current on the
10-10-2015.

This updates:
 - LLVM to 3.6.1
 - GCC to GCC 5.1
 - Replace minix/commands/zdump with usr.bin/zdump
 - external/bsd/libelf has moved to /external/bsd/elftoolchain/
 - Import ctwm
 - Drop sprintf from libminc

Change-Id: I149836ac18e9326be9353958bab9b266efb056f0

sys/dev/videomode/edid.c

@@ -1,4 +1,4 @@
-/* $NetBSD: edid.c,v 1.12 2013/02/08 16:35:10 skrll Exp $ */
+/* $NetBSD: edid.c,v 1.13 2014/11/17 00:46:04 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2006 Itronix Inc.
@@ -32,7 +32,7 @@
  */ 
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: edid.c,v 1.12 2013/02/08 16:35:10 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: edid.c,v 1.13 2014/11/17 00:46:04 jmcneill Exp $");
 
 #include <sys/param.h>
 #if defined(__minix)
@@ -295,6 +295,8 @@ edid_print(struct edid_info *edid)
 		    DIVIDE(DIVIDE(edid->edid_preferred_mode->dot_clock * 1000,
 		    edid->edid_preferred_mode->htotal),
 		    edid->edid_preferred_mode->vtotal));
+
+	printf("Number of extension blocks: %d\n", edid->edid_ext_block_count);
 }
 
 static const struct videomode *
@@ -578,6 +580,8 @@ edid_parse(uint8_t *data, struct edid_info *edid)
 	edid->edid_chroma.ec_whitex = EDID_CHROMA_WHITEX(data);
 	edid->edid_chroma.ec_whitey = EDID_CHROMA_WHITEY(data);
 
+	edid->edid_ext_block_count = EDID_EXT_BLOCK_COUNT(data);
+
 	/* lookup established modes */
 	edid->edid_nmodes = 0;
 	edid->edid_preferred_mode = NULL;

sys/dev/videomode/edidreg.h

@@ -1,4 +1,4 @@
-/*	$NetBSD: edidreg.h,v 1.3 2011/03/30 18:49:56 jdc Exp $	*/
+/*	$NetBSD: edidreg.h,v 1.4 2014/11/17 00:46:04 jmcneill Exp $	*/
 
 /*-
  * Copyright (c) 2006 Itronix Inc.
@@ -250,4 +250,6 @@
 #define	EDID_DESC_STD_TIMING_START		5
 #define	EDID_DESC_STD_TIMING_COUNT		6
 
+#define	EDID_EXT_BLOCK_COUNT(ptr)		((ptr)[126])
+
 #endif /* _DEV_VIDEOMODE_EDIDREG_H */

sys/dev/videomode/edidvar.h

@@ -1,4 +1,4 @@
-/*	$NetBSD: edidvar.h,v 1.2 2006/05/11 19:05:41 gdamore Exp $	*/
+/*	$NetBSD: edidvar.h,v 1.3 2014/11/17 00:46:04 jmcneill Exp $	*/
 
 /*-
  * Copyright (c) 2006 Itronix Inc.
@@ -75,6 +75,7 @@ struct edid_info {
 	uint8_t		edid_max_vsize;		/* in cm */
 	uint8_t		edid_gamma;
 	uint8_t		edid_features;
+	uint8_t		edid_ext_block_count;
 
 	int			edid_have_range;
 	struct edid_range	edid_range;

sys/dev/videomode/pickmode.c

@@ -36,11 +36,9 @@ __KERNEL_RCSID(0, "$NetBSD: pickmode.c,v 1.4 2011/04/09 20:53:39 christos Exp $"
 #if !defined(__minix)
 #include "opt_videomode.h"
 #else
+#include <lib/libkern/libkern.h>
 #include <minix/sysutil.h>
 #endif /* !defined(__minix) */
-#ifndef abs
-#define abs(x) (((x) < 0) ? -(x) : (x))
-#endif
 
 #ifdef PICKMODE_DEBUG
 #define DPRINTF printf

sys/dev/videomode/vesagtf.c

@@ -1,4 +1,4 @@
-/* $NetBSD: vesagtf.c,v 1.2 2013/09/15 15:56:07 martin Exp $ */
+/* $NetBSD: vesagtf.c,v 1.3 2014/03/21 22:00:00 dholland Exp $ */
 
 /*-
  * Copyright (c) 2006 Itronix Inc.
@@ -38,7 +38,7 @@
  * Note that I have heavily modified the program for use in the EDID
  * kernel code for NetBSD, including removing the use of floating
  * point operations and making significant adjustments to minimize
- * error propogation while operating with integer only math.
+ * error propagation while operating with integer only math.
  *
  * This has required the use of 64-bit integers in a few places, but
  * the upshot is that for a calculation of 1920x1200x85 (as an
@@ -153,7 +153,7 @@
 #ifdef	_KERNEL
 #include <sys/cdefs.h>
 
-__KERNEL_RCSID(0, "$NetBSD: vesagtf.c,v 1.2 2013/09/15 15:56:07 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vesagtf.c,v 1.3 2014/03/21 22:00:00 dholland Exp $");
 #include <sys/types.h>
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -343,7 +343,7 @@ vesagtf_mode_params(unsigned h_pixels, unsigned v_lines, unsigned freq,
      *
      * Finally we multiply by another 1000, to get value in picosec.
      * Why picosec?  To minimize rounding errors.  Gotta love integer
-     * math and error propogation.
+     * math and error propagation.
      */
 
     h_period_est = DIVIDE(((DIVIDE(2000000000000ULL, v_field_rqd)) -
@@ -402,7 +402,7 @@ vesagtf_mode_params(unsigned h_pixels, unsigned v_lines, unsigned freq,
      *  [V FIELD RATE EST] = 1000000000 / [H PERIOD EST] / [TOTAL V LINES]
      *
      *  This is all scaled to get the result in uHz.  Again, we're trying to
-     *  minimize error propogation.
+     *  minimize error propagation.
      */
     v_field_est = DIVIDE(DIVIDE(1000000000000000ULL, h_period_est),
 	total_v_lines);
@@ -495,7 +495,7 @@ vesagtf_mode_params(unsigned h_pixels, unsigned v_lines, unsigned freq,
      *
      *  The ending result is that our ideal_duty_cycle is 256000x larger
      *  than the duty cycle used by VESA.  But again, this reduces error
-     *  propogation.
+     *  propagation.
      */
 
     ideal_duty_cycle =