Issue #1274 - Part 1: Adopt the cairo version as our own.

- Move header licensing from tri-license to MPL 2.0. MPL-compatible
  other licensing has been retained where originally present.
- Remove individual superseded licensing terms.
- Remove patches, outdated readmes & incomplete patch summaries.
- Remove incomplete cairo release notes (only went up to 1.6.4 anyway).
- Rewrite COPYING to indicate the current state of the library in tree.

1 files changed, 0 insertions, 57 deletions

diff --git a/gfx/cairo/handle-multi-path-clip.patch b/gfx/cairo/handle-multi-path-clip.patch
deleted file mode 100644
index fe4268885..000000000
--- a/gfx/cairo/handle-multi-path-clip.patch
+++ /dev/null
@@ -1,57 +0,0 @@
-diff --git a/gfx/cairo/cairo/src/cairo-image-surface.c b/gfx/cairo/cairo/src/cairo-image-surface.c
---- a/gfx/cairo/cairo/src/cairo-image-surface.c
-+++ b/gfx/cairo/cairo/src/cairo-image-surface.c
-@@ -2885,16 +2885,18 @@ static cairo_status_t
-     cairo_bool_t need_clip_mask = FALSE;
-     cairo_status_t status;
-     struct _cairo_boxes_chunk *chunk;
-     uint32_t pixel;
-     int i;
- 
-     if (clip != NULL) {
- 	status = _cairo_clip_get_region (clip, &clip_region);
-+	if (unlikely (status == CAIRO_INT_STATUS_NOTHING_TO_DO))
-+	    return CAIRO_STATUS_SUCCESS;
- 	need_clip_mask = status == CAIRO_INT_STATUS_UNSUPPORTED;
- 	if (need_clip_mask &&
- 	    (op == CAIRO_OPERATOR_SOURCE || ! extents->is_bounded))
- 	{
- 	    return CAIRO_INT_STATUS_UNSUPPORTED;
- 	}
- 
- 	if (clip_region != NULL && cairo_region_num_rectangles (clip_region) == 1)
-@@ -3200,30 +3202,20 @@ static cairo_status_t
-     return _clip_and_composite (dst, op, src,
- 				_composite_traps, &info,
- 				extents, clip);
- }
- 
- static cairo_clip_path_t *
- _clip_get_single_path (cairo_clip_t *clip)
- {
--    cairo_clip_path_t *iter = clip->path;
--    cairo_clip_path_t *path = NULL;
--
--    do {
--	if ((iter->flags & CAIRO_CLIP_PATH_IS_BOX) == 0) {
--	    if (path != NULL)
--		return FALSE;
--
--	    path = iter;
--	}
--	iter = iter->prev;
--    } while (iter != NULL);
--
--    return path;
-+    if (clip->path->prev == NULL)
-+      return clip->path;
-+
-+    return NULL;
- }
- 
- /* high level image interface */
- 
- static cairo_int_status_t
- _cairo_image_surface_paint (void			*abstract_surface,
- 			    cairo_operator_t		 op,
- 			    const cairo_pattern_t	*source,