[1] Fix the build on alpha by removing -ffast-math from the build cflags.
[2] Remove an unnecessary configure script from when this was built from
monolithic sources.
[3] Register conflicts for dri-devel in dri.
Submitted by: [1] krismail
(Only the first 10 of 11 ports in this commit are shown above. )
Add new port "dri". This port contains the split-out DRI client drivers from
XFree86-4-Server. I decided the history from XFree86-4-Server wasn't
significant enough, and will hopefully be obsolete soon when Mesa starts
providing the DRI drivers.