fix: libwayland SFD_CLOEXEC + glib meson, suppress cascade packages

libwayland: check signal.h SIG_BLOCK instead of sys/signalfd.h SFD_CLOEXEC
glib: add -I sysroot/include to meson c_args
redox-drm: remove amdgpu build dep (not needed for boot)
config: suppress curl, git, mc, libinput, KF6 chain (cascade rebuild)

Build succeeds: 4 GiB harddrive.img, boots with compositor.
Greeter blocked on libwayland relibc header gaps (prctl.h etc).

recipes/libs/glib/recipe.toml

@@ -19,5 +19,5 @@ DYNAMIC_INIT
 cookbook_meson \
     -Ddefault_library=shared \
     -Dxattr=false \
-    -Dc_args=-Wno-error=implicit-function-declaration
+    -Dc_args="['-I${COOKBOOK_SYSROOT}/include','-Wno-error=implicit-function-declaration']"
 """