SDL API renaming: SDL_joystick.h

[slouken]

Here are proposed name changes for functions in SDL_joystick.h, per discussion in #6569

SDL_GetJoystickGUIDInfo
SDL_JoystickAttachVirtual => SDL_AttachVirtualJoystick
SDL_JoystickAttachVirtualEx => SDL_AttachVirtualJoystickEx
SDL_JoystickClose => SDL_CloseJoystick
SDL_JoystickCurrentPowerLevel => SDL_GetJoystickPowerLevel
SDL_JoystickDetachVirtual => SDL_DetachVirtualJoystick
SDL_JoystickEventState => SDL_GetJoystickEventState
SDL_JoystickFromInstanceID => SDL_GetJoystickFromInstanceID
SDL_JoystickFromPlayerIndex => SDL_GetJoystickFromPlayerIndex
SDL_JoystickGetAttached => SDL_IsJoystickConnected
SDL_JoystickGetAxis => SDL_GetJoystickAxis
SDL_JoystickGetAxisInitialState => SDL_GetJoystickAxisInitialState
SDL_JoystickGetButton => SDL_GetJoystickButton
SDL_JoystickGetDeviceGUID => SDL_GetJoystickDeviceGUID
SDL_JoystickGetDeviceInstanceID => SDL_GetJoystickDeviceInstanceID
SDL_JoystickGetDevicePlayerIndex => SDL_GetJoystickDevicePlayerIndex
SDL_JoystickGetDeviceProduct => SDL_GetJoystickDeviceProduct
SDL_JoystickGetDeviceProductVersion => SDL_GetJoystickDeviceProductVersion
SDL_JoystickGetDeviceType => SDL_GetJoystickDeviceType
SDL_JoystickGetDeviceVendor => SDL_GetJoystickDeviceVendor
SDL_JoystickGetFirmwareVersion => SDL_GetJoystickFirmwareVersion
SDL_JoystickGetGUID => SDL_GetJoystickGUID
SDL_JoystickGetGUIDFromString => SDL_GetJoystickGUIDFromString
SDL_JoystickGetGUIDString => SDL_GetJoystickGUIDString
SDL_JoystickGetHat => SDL_GetJoystickHat
SDL_JoystickGetPlayerIndex => SDL_GetJoystickPlayerIndex
SDL_JoystickGetProduct => SDL_GetJoystickProduct
SDL_JoystickGetProductVersion => SDL_GetJoystickProductVersion
SDL_JoystickGetSerial => SDL_GetJoystickSerial
SDL_JoystickGetType => SDL_GetJoystickType
SDL_JoystickGetVendor => SDL_GetJoystickVendor
SDL_JoystickHasLED
SDL_JoystickHasRumble
SDL_JoystickHasRumbleTriggers
SDL_JoystickInstanceID => SDL_GetJoystickInstanceID
SDL_JoystickIsVirtual => SDL_IsJoystickVirtual
SDL_JoystickName => SDL_GetJoystickName
SDL_JoystickNameForIndex => SDL_GetJoystickNameForIndex
SDL_JoystickNumAxes => SDL_GetNumJoystickAxes
SDL_JoystickNumButtons => SDL_GetNumJoystickButtons
SDL_JoystickNumHats => SDL_GetNumJoystickHats
SDL_JoystickOpen => SDL_OpenJoystick
SDL_JoystickPath => SDL_GetJoystickPath
SDL_JoystickPathForIndex => SDL_GetJoystickPathForIndex
SDL_JoystickRumble => SDL_RumbleJoystick
SDL_JoystickRumbleTriggers => SDL_RumbleJoystickTriggers
SDL_JoystickSendEffect => SDL_SendJoystickEffect
SDL_JoystickSetLED => SDL_SetJoystickLED
SDL_JoystickSetPlayerIndex => SDL_SetJoystickPlayerIndex
SDL_JoystickSetVirtualAxis => SDL_SetJoystickVirtualAxis
SDL_JoystickSetVirtualButton => SDL_SetJoystickVirtualButton
SDL_JoystickSetVirtualHat => SDL_SetJoystickVirtualHat
SDL_JoystickUpdate => SDL_UpdateJoysticks
SDL_LockJoysticks
SDL_NumJoysticks => SDL_GetNumJoysticks
SDL_UnlockJoysticks

@libsdl-org/a-team for discussion?

[icculus]

This subsystem took a beating, but I think it's an improvement.