Sync wiki -> header

Aded a patch note for relative mouse mode over RDP

audio: Fix false positives in driver name comparison

Without this change, driver names don't get matched correctly;
for example "a" can get matched with "alsa" since it only checks
whether the string matches up to the length of the requested
driver name.

Fixed whitespace

Backed out changeset 51622f74dc85

hidapi: Zero out new hid_device_info structs

rename os2 makefile so that 'make dist' catches it; update it a bit.

Added patch note for Android Studio support

Don't X error in SDL_CreateWindow with unsupported GL attributes

Fixed Mac OS X build