Red Bear OS — microkernel OS in Rust, based on Redox

Derivative of Redox OS (https://www.redox-os.org) adding:
- AMD GPU driver (amdgpu) via LinuxKPI compat layer
- ext4 filesystem support (ext4d scheme daemon)
- ACPI fixes for AMD bare metal (x2APIC, DMAR, IVRS, MCFG)
- Custom branding (hostname, os-release, boot identity)

Build system is full upstream Redox with RBOS overlay in local/.
Patches for kernel, base, and relibc are symlinked from local/patches/
and protected from make clean/distclean. Custom recipes live in
local/recipes/ with symlinks into the recipes/ search path.

Build:  make all CONFIG_NAME=redbear-full
Sync:   ./local/scripts/sync-upstream.sh

recipes/tests/sysbench/redox.patch

@@ -0,0 +1,11 @@
+--- a/src/lua/internal/Makefile.am
++++ b/src/lua/internal/Makefile.am
+@@ -26,7 +26,7 @@ SUFFIXES = .lua .lua.h
+
+ .lua.lua.h:
+ 	@echo "Creating $@ from $<"
+-	@var=$$(echo $< | sed 's/\./_/g')	&& \
++	@var=$$(basename $< | sed 's/\./_/g')	&& \
+ 	( echo "unsigned char $${var}[] =" 	&& \
+ 	sed -e 's/\\/\\\\/g'			\
+ 	    -e 's/"/\\"/g'			\