Re-Add xorg7-nvidia as xorg7_nvidia which will download and compile during the first build.
	modified:   ts/5.1/build.conf.example
	modified:   ts/5.1/build.urls
	modified:   ts/5.1/conf/default/build.conf.example
	modified:   ts/5.1/conf/devstation/build.conf.example
	modified:   ts/5.1/conf/freerdp/build.conf.example
	modified:   ts/5.1/conf/installer/build.conf.example
	modified:   ts/5.1/conf/xfce/build.conf.example
	new file:   ts/5.1/packages/xorg7_nvidia/.dna
	new file:   ts/5.1/packages/xorg7_nvidia/build/extra/etc/udev/rules.d/00-nvidia.rules
	new file:   ts/5.1/packages/xorg7_nvidia/build/extra/etc/udev/scripts/nvidia.sh
	new file:   ts/5.1/packages/xorg7_nvidia/build/extra/lib/pixmaps/nvidia-settings_16x16.xpm
	new file:   ts/5.1/packages/xorg7_nvidia/build/extra/lib/pixmaps/nvidia-settings_32x32.xpm
	new file:   ts/5.1/packages/xorg7_nvidia/build/finalize
	new file:   ts/5.1/packages/xorg7_nvidia/build/install
	new file:   ts/5.1/packages/xorg7_nvidia/build/remove
	new file:   ts/5.1/packages/xorg7_nvidia/dependencies
	new file:   ts/unwind_cache/xorg7_nvidia.turbo
	new file:   ts/wind_cache/xorg7_nvidia.turbo