[Xcb] [PATCH] htmldir was introduced in autoconf 2.59c: set a reasonable value for earlier versions.

[Donnie Berkholz]

Jamey Sharp wrote:
> I want to use autoconf's definition of htmldir if available, but that's
> not a very good reason to make a seven-month old release a hard
> requirement.

It's only a requirement for developers, so I don't think it's 
unreasonable to ask them to use a current version instead of adding more 
workarounds.

Thanks,
Donnie