libbladeRF & CLI: [WIP] In the process of switching over to CMake

*Warning:* This is a broken nightly commit.

If not obvious, quite a bit of rearranging has been done.

The build script(s) for libbladeRF is mostly complete. This still
requires further configuration of debug builds and version info being
used to populate a version header.

Some cleanup has been done in the (formerly apps, now) utilities
directory. There's no CMake support in here yet...that's comming in the
next commit.