Build improvements

Hi Mark

we met after your talk at Ruxcon, I was the guy interested in MIPS and radare2 :-)

Anyway, because I really like automation and dislike manually building software*** here is a Makefile that automates the process of fetching dependencies and building as a local user, so the only thing that needs `sudo` now is `apt-get`. It works now by making a python virtualenv so that the install of the libraries (capstone, etc) doesn't interfere with the system Python.

Tested as far as I could against Debian Wheezy amd64; so capstone and all the rest import correctly. 

I had trouble using vdb, I assume I downloaded the correct things - I just get a syntax error on 'dump_state' - probably doing something wrong, I had not heard of vdb before

anyway, hope this is of use to you!
I probably wont get much of a chance to play with concolica now although I am  interested in analysing a particular program I have with it; I have a tutorial on using radare2 to present at LinuxConf in Auckland in January so I will be too busy writing that over the next few months :-|

all the best
--Andrew
@pastcompute

*** You can get a sense of this from my blog, in http://blog.oldcomputerjunk.net/2014/raspberry-pi-virtual-machine-automation/ - I went to the extreme of automating a Raspberry Pi qemu vm build :-)