NEWS: Add notes for the cairo 1.5.16 snapshot

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+Snapshot 1.5.16 (2008-04-01 Carl Worth <cworth@cworth.org>)
+===========================================================
+This is the eighth snapshot in cairo's unstable 1.5 series. It comes
+less than two weeks after the 1.5.14 snapshot and it really is a
+legitimate snapshot, (in spite of sharing this date with that of many
+bogus announcements). The major change in this snapshot is that the
+cairo-quartz backend is now officially "supported", including new API
+to construct a font face from a CGFontRef . Also several bug fixes
+have been fixed in many backends. See below for details.
+
+general
+-------
+Cairo now depends on pixman 0.10.0 which was recently released. The
+latest pixman release can always be found alongside cairo releases at:
+
+   http://cairographics.org/releases
+
+Increase the precision of color stops for gradients. This fixes a
+regression in gradient rendering that had been present since the
+1.5.12 snapshot.
+
+paginated (all of ps, pdf, svg, and win32-printing)
+---------------------------------------------------
+Fix assertion failure when some drawing elements are outside the page
+boundaries, (this bug was noticed when using Inkscape to print a
+drawing with landscape orientation to a portrait-oriented piece of
+paper).
+
+cairo-ps
+--------
+Fix of bug causing incorrect glyph positioning.
+
+Fix handling of CAIRO_OPERATOR_SOURCE.
+
+cairo-pdf
+---------
+More reduction of unnecessary digits of precision in PDF output.
+
+Fix handling of CAIRO_OPERATOR_SOURCE.
+
+cairo-svg
+---------
+Fix bug in usage of libpng that was preventing cairo_mask from working
+with the svg backend.
+
+Fix transformation of source pattern for cairo_stroke().
+
+cairo-win32-printing
+--------------------
+Fix fallback resolution, (thanks again to inkscape users/developers
+for helping us find this one).
+
+cairo-quartz
+------------
+Mark the cairo-quartz backend as "supported" rather than
+"experimental". This means the following:
+
+    * The backend will now be built by default (if possible).
+
+    * We are committing that the backend-specific API (as published in
+      cairo-quartz.h) are stable and will be supported in all future
+      cairo 1.x releases.
+
+    * We are committing that the output quality of this backend
+      compares favorably with other cairo backends, (and that quality
+      is ensured by good results from the cairo test suite).
+
+    * We recommend that distributions build and distribute this
+      backend when possible.
+
+Note that the cairo_quartz_image API (in cairo-quartz-image.h) is
+still experimental, will not build by default, (pass
+--enable-quartz-image to configure to build it), and may see API
+changes before it is marked as "supported" in a future release.
+
+Put the CAIRO_FONT_TYPE_ATSUI name back into
+cairo-deprecated.h. Without this, the cairo 1.5.14 snapshot broke all
+builds for applications using the C++ cairomm bindings (and perhaps
+others) which have the CAIRO_FONT_TYPE_ATSUI name in their header
+files. This breakage happened even for applications not using
+cairo-quartz at all.
+
+    Note: Even though the CAIRO_FONT_TYPE_ATSUI name is provided to
+    avoid this build breakage, we still recommend that bindings and
+    applications move to the new, and more accurate,
+    CAIRO_FONT_TYPE_QUARTZ name.
+
+Replace the implementation of cairo-quartz-font to use CFFont instead
+of ATSUI. The CGFont API is a better fit than ATSUI, and this new
+implementation is also more correct than the old one as well.
+
+This also adds the following new API call:
+
+	cairo_public cairo_font_face_t *
+	cairo_quartz_font_face_create_for_cgfont (CGFontRef font);
+
+The previous cairo_quartz_font_face_create_for_atsu_font_id function
+continues to exist and is part of the supported API going
+forward. (However, the old name of that same function, which was
+cairo_atsui_font_face_create_for_atsu_font_id is officially
+deprecated. Any source code using the old name should be updated to
+use the new name.)
+
+Fix transformation of source pattern for cairo_stroke().
+
+cairo-win32
+-----------
+Avoid crash in create_similar is cairo_win32_surface_create fails.
+
 Snapshot 1.5.14 (2008-03-20 Carl Worth <cworth@cworth.org>)
 ===========================================================
 This is the seventh snapshot in cairo's unstable 1.5 series. It comes