Finally moved to emacs24, still using gdb-ui though

To use gdb-ui rather than the broken gdb-mi you'll need to:
- Grab `gdb-ui.el` and `gdb-ui.elc` from emacs 23 source
- Put them in your load path somewhere
- `(require 'gdb-ui)` in your init

firmware/Makefile

@@ -241,7 +241,7 @@ etags: $(TAGFILES)
 #
 .PHONY: emacs
 emacs:
-	@emacs23 $(TAGFILES) Makefile config.mk README.md
+	@emacs $(TAGFILES) Makefile config.mk README.md
 
 # Test
 #