PULL 'background none' doc and loader cleanups

[Michal Suchanek]

Hello,

my reviewed patches are available here:

git://repo.or.cz/xserver/hramrach.git pull

+ b04aff76ac2eb461c71b85525a00e25efb8bf267 Document -background none option
+ 0d4bb5442ceb8e8e4a8de6cfc4203cae469eee72 Unload submodules.
+ 24d435163eb5fbd9b73cd8ba13a9b3cdbbe8a1df Use UnloadModuleOrDriver
for UnloadSubModule.
+ df0dd36deea0c756819825113e825059ddd19243 Do not uselessly reload
modules in DuplicateModule

Thanks

Michal