[cairo] version was: (no subject)

[Carl Worth]

On Wed, 10 Aug 2005 13:16:08 -0400 (EDT), Behdad Esfahbod wrote:
> Make it multiply by 100 then, like others, and let
> CAIRO_VERSION_ENCODE get tag too.  If tag is non-null, add
> 9 to the version returned.

Multiply by 100 would work, but all we need is one bit here. The point
of "-head" is to indicate that the code is at a not-yet-precisely-
distinguished point between two actual versions.

I don't want to give CAIRO_VERSION_ENCODE another parameter since it's
something the user is expected to actually use in programs. For
example:

	#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(0,9,0)

And the user would never have any reason to pass a fourth argument
here.

-Carl
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