[PATCH libICE docs] Add top-level target for documentation.

[Trevor Woerner]

On Tue, Nov 23, 2010 at 10:07 AM, Gaetan Nadon <memsize at videotron.ca> wrote:
> As Julien suggested, it should be named install-docs perhaps.

If you don't mind, I prefer Julien's suggestion of "install-specs"
since this target is meant to work in the "specs" directory, and there
also exists a "doc" directory in libICE. I think it would be less
confusing.