Debianization of libbladeRF and friends

How to build the .debs:
    wget https://github.com/Nuand/bladeRF/archive/master.tar.gz
    tar -zxvf master.tar.gz
    cd bladeRF-master
    debuild -i -us -uc -b

Caveat: once we get into a groove release-wise, we'll need to remember
to update debian/changelog (look at the 'dch' command)

This produces three .deb files:
bladerf_0~20131005-2_amd64.deb
    Contains bladeRF-cli, bladeRF-flash, and man pages
libbladerf0_0~20131005-2_amd64.deb
    Contains libbladeRF.so.0
libbladerf0-dev_0~20131005-2_amd64.deb
    Contains libbladeRF.so symlink, libbladeRF.h, and libbladeRF.pc

This is still somewhat fragile.  Also, it pretty much depends on
Ubuntu 13.10, which hasn't been released yet.  But we're ahead of
the game, no?!
Only copy one README.md file to debian docs
Add doxygen markdown files to generate man pages
Generate manpages for bladeRF-* with doxygen

It still requires manual canoodling, but the canoodling is with
markdown instead of nroff.
Merge pull request #142 from rtucker/issue121_packaging_debianstyle_gitfix

Issue #121 packaging, debianstyle (pull request attempt 2)