This greatly reduces the amount of xml in the docs.

Should be "lose"

https://bugzilla.gnome.org/show_bug.cgi?id=700844

GTK-Doc does not like bare '#', so let's turn them into #.

Include (gdk/)fallback-c89.c as isnan() and isinf() is used.

gdk_rgba_parse was accepting too much nonsense, as pointed out
in bug 667485.

This saves some manual copying.
Pointed out in bug 667473.

Since parse() is a method of the Gdk.RGBA class, the GdkRGBA pointer
should be the first argument, and the string the second one, to allow a
more natural binding.

https://bugzilla.gnome.org/show_bug.cgi?id=635879

CSS3 defines a somewhat odd syntax for rgba() colors - the rgb values
are integers from 0 to 255 or percentages and the a value is a
float from 0 to 1. To avoid increasing the total amount of confusion
in the world, make gdk_rgb_to_string() and gdk_rgb_parse() follow
this syntax rather than using floats for r, g, and b.

https://bugzilla.gnome.org/show_bug.cgi?id=633762

CSS3 defines a somewhat odd syntax for rgba() colors - the rgb values
are integers from 0 to 255 or percentages and the a value is a
float from 0 to 1. To avoid increasing the total amount of confusion
in the world, make gdk_rgb_to_string() and gdk_rgb_parse() follow
this syntax rather than using floats for r, g, and b.

https://bugzilla.gnome.org/show_bug.cgi?id=633762

https://bugzilla.gnome.org/show_bug.cgi?id=633216

https://bugzilla.gnome.org/show_bug.cgi?id=633216

In particular, test that serialization is not dependent on the
locale.

GdkRGBA is a boxed struct similar to GdkColor, with the difference
that it stores alpha information as well, and colors are stored in
[0..1] doubles, in the cairo spirit.

gdk_cairo_set_source_rgba() has been also added to allow easier handling
of this new type.