drm.4 man page and import of X11 drm-kms.7 and al.

[tlaronde%kergis.com@localhost]

I have modified drm.4 to state that the drivers are obsolete and 
to suppress a mention of viadrm that was removed long ago (now superseded by
viadrmums, provided in drm2/ ---drmkms--- part).

Patch can be retrieved from https://github.com/tlaronde/src

There is no man page for drmkms (the kernel part), but there are man
pages in the X sources, in the rst format
(external/mit/libdrm/dist/man/drm-kms.7.rst) with a bunch of related
resources that provide a view of the DRI thing (from the X POV).

There is rst2man-3.10 (pkgsrc py310-docutils) to convert these to man
pages.

Should this be done (it is the X11/DRI interface, not the kernel one, so
should reside in the X11R7 realm)?
-- 
        Thierry Laronde <tlaronde +AT+ kergis +dot+ com>
                     http://www.kergis.com/
                    http://kertex.kergis.com/
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