Performance build for OpenDingux

This release is intended only for use in lepus and jz4770 devices with the OpenDingux firmware released here https://github.com/OpenDingux/buildroot/actions/runs/3101426374
Built with the updated toolchain

There are no other changes

Fix 02 for OpenDingux beta

Builds

• beebem-0.6.3-od-multi-2021-10-09-fix02.opk valid for GCW-Zero, RG350(P)(M), RG280(V)(M), LDK vertical, and horizontal, RS97, RG300 devices running the beta OpenDingux. You can obtain the latest version here

Changes

• Reverted screen surface to hardware and changed the blit function. The problem with screen going bad with flickering colors has not observed in the testings I have made with diferent devices (RG280M, RG350M, RG350P, LDKV).
• Enabled triple buffer and set screen refresh to 50Hz.
• Added hardware scaler. The scaler is denominated IPU. It's selected by default for games without previous configuration. You can enable it in game options.
• Added some transparency to virtual keyboard, so now all scanlines are generated when virtual keyboard is enabled.
• Lepus build.
• Also I have changed version in opk name and release tag from 0.6.2 to 0.6.3 to match real version shown inside beebem.

Fix 01 for OpenDingux beta

Changes

• Fixed SIGSEV in creating the flipped virtual keyboard. This what was that made beebem not work on OD Beta.
• Also fix the copy of pixels from vistual keyboard to the flipped one. Now the virtual keyboard should be Ok with flipped screen.
• Set software surface for video mode. This is for trying to prevent screen going mad (flickering colors) on my RG280M, but probably this is not fully fixed and need more investigation.
• Disabled SDL cursor.