legacy slave port `x11/nvidia-driver-340'; update top comment accordingly
- No longer explicitly advertise brokenness for ${OSVERSION} > 1000041 and
${NVVERSION} <= 71.08615 combination: not only old legacy ports recently
had been removed, but frankly users of those old gfx cards should either
not be running FreeBSD 10.x or totally rely on self-support, thus making
this BROKEN statement merely an annoyance for them (other checks for some
older driver versions still remain as being functional)
- Change CONFLICTS to CONFLICTS_INSTALL (honestly, this change *should* be
no-op since CONFLICTS should be installation-time conflicts in the first
place, but adhere to this stupidity of the framework for the time being)
591510fe07