Start adding Linux Udev joypad input.
More fixups in udev joypads.
Add force feedback.
Hook up rumble interfaces to input drivers.
Add RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE.
Add rumble tests to libretro-test.
Small cleanups.
Minor tweaks.
Fixes to force feedback.
Add udev to ./configure
Merge branch 'udev'
Support variable strength for rumble motors.
Add rumble support to XInput driver
Don't rumble if strength == 0.
Don't install 0-strength rumble effects.
Stop rumbling effects when entering RGUI.
(RMenu) Use rgui->selection_ptr
tweak xinput rumble
Merge pull request #310 from pinumbernumber/master

Add rumble support to XInput driver
Build fix.