Solve libGL.so and libglx.so conflict situation between libGL, xorg-server and
the nvidia-driver. Install the libraries in port specific directories.
Use pkg-install and pkg-deinstall scripts to update the hardlinks to the
default locations of these files.
While here clean up some @dirrmtry lines in xorg-server plist for directories
that aren.t created by xorg-server.
Inspiration: irc, freebsd-x11@ mailinglist discussion (sorry can't find it
anymore to give credit the people)
Reviewed by: danfe@ (for nvidia parts), bapt@
Approved by: danfe@ (for nvidia parts)
With hat: x11@