multimedia/libvpx: update 1.6.0

ABI is incompatible... or not? SONAME has changed but the removed vp10
symbols weren't actually exposed (and still aren't).

Note, FreeBSD 9.x now builds with Clang 3.4 because GCC 4.2 fails:

  vp9/encoder/x86/vp9_frame_scale_ssse3.c: In function 'eight_tap_row_ssse3':
  vp9/encoder/x86/vp9_frame_scale_ssse3.c:93: internal compiler error: in simplify_binary_operation_1, at simplify-rtx.c:2563
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Changes:	https://chromium.googlesource.com/webm/libvpx/+log/v1.5.0..v1.6.0
ACC report:	https://people.freebsd.org/~jbeich/compat_reports/libvpx/1.5.0_to_1.6.0/compat_report.html

1 files changed, 0 insertions, 32 deletions

diff --git a/multimedia/libvpx/files/patch-mozilla-bug1224361 b/multimedia/libvpx/files/patch-mozilla-bug1224361
deleted file mode 100644
index f3b90cee21b6..000000000000
--- a/multimedia/libvpx/files/patch-mozilla-bug1224361
+++ /dev/null
@@ -1,32 +0,0 @@
-From ff3674a15e5b1a006546e1edc64c3e778eb34ab1 Mon Sep 17 00:00:00 2001
-From: James Zern <jzern@google.com>
-Date: Thu, 3 Dec 2015 16:16:28 -0800
-Subject: vp8: fix quantizer clamping
-
-the quantizer is transmitted as 7-bits + sign so needs to be clamped in
-the delta + absolute case.
-
-BUG=https://bugzilla.mozilla.org/show_bug.cgi?id=1224361
-
-Change-Id: I9115f5d1d5cf7e0a1d149d79486d9d17de9b9639
----
- vp8/decoder/decodeframe.c | 5 ++---
- 1 file changed, 2 insertions(+), 3 deletions(-)
-
-diff --git vp8/decoder/decodeframe.c vp8/decoder/decodeframe.c
-index f0d7603..4bc87eb 100644
---- vp8/decoder/decodeframe.c
-+++ vp8/decoder/decodeframe.c
-@@ -73,10 +73,9 @@ void vp8_mb_init_dequantizer(VP8D_COMP *pbi, MACROBLOCKD *xd)
- 
-         /* Delta Value */
-         else
--        {
-             QIndex = pc->base_qindex + xd->segment_feature_data[MB_LVL_ALT_Q][mbmi->segment_id];
--            QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) : 0;    /* Clamp to valid range */
--        }
-+
-+        QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) : 0;    /* Clamp to valid range */
-     }
-     else
-         QIndex = pc->base_qindex;