Supplemental note for packagers

busid.conf needs to be removed in order for optirun to work.

doc/RELEASE_NOTES_3_2_1

@@ -6,16 +6,22 @@ Highlights:
 - [fix] Fixed an issue where an empty XorgModulePath lead to -isolateDecide
   being removed from Xorg start command line instead of -modulepath.

Important note for packagers:
In 3.2 release, we have extended our nvidia-specific udev rule file to add
device files (/dev/nvidia*) when the module is loaded (previously it would only
remove those files when the module is unloaded). Consequently, we also changed
its name. Some distributions, for example Gentoo, do not need to install this
rule file because they already have a similar mechanism in place. Please also
note that the rule file sets file permissions to 0666; you may want to adjust it
to set permissions/owner/group more strictly according to your distribution's
practice before installing. If you already use the kernel module options to
declare permissions, simply running nvidia-smi on module load will do the job.
Important notes for packagers:
 - In 3.2.1 release, we removed the bumblebee/xorg.conf.d/busid.conf file,
   because it was avoiding X to start in cases widely common. If your packaging
   system does not automatically remove it on upgrade to 3.2.1, then you will
   still have a broken optirun. You either need to remove this file on package
   upgrade or tell your distro users to do so, depending on your distro policy.
 - In 3.2 release, we have extended our nvidia-specific udev rule file to add
   device files (/dev/nvidia*) when the module is loaded (previously it would
   only remove those files when the module is unloaded). Consequently, we also
   changed its name. Some distributions, for example Gentoo, do not need to
   install this rule file because they already have a similar mechanism in
   place. Please also note that the rule file sets file permissions to 0666; you
   may want to adjust it to set permissions/owner/group more strictly according
   to your distribution's practice before installing. If you already use the
   kernel module options to declare permissions, simply running nvidia-smi on
   module load will do the job.

Notes:
- bbswitch is independent of the driver; vga_switcheroo works for nouveau only.