Squashed commit of the following:
commit b3afbbf15839d5ad9343d4540674510cbd6cd16d
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date: Wed Dec 24 17:44:20 2014 -0500
improve the debugger help a little bit
commit 82e1e4e3e4d802defbf49c965500ffc72c7be1af
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date: Wed Dec 24 17:32:21 2014 -0500
prevent filename tab completion in the debugger.
commit 8765e5f428562e5ab6f8d59ec0e0460a834c66b5
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date: Wed Dec 24 16:06:21 2014 -0500
skip macsbug names when disassembling via ;list
commit 9b87cfb3851fedc6423629608f53076741116991
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date: Wed Dec 24 15:43:13 2014 -0500
improved backtracing.
commit f8e364d7c568fe6728c8efd5587f7edeb49f5816
Author: Kelvin Sherlock <ksherlock@gmail.com>
Date: Wed Dec 24 15:17:28 2014 -0500
BackTrace support