Have ./configure check for needed libraries

[HalosGhost]

shaman's configure script checks for needed headers/libraries; it is likely helpful to have this so that you can know ahead of time if the compilation will fail.

We should go further than I did with shaman though:

• [x] Check for all #included header files
• [x] Check for all binaries used for build
• [x] Check for all .sos we link to

[HalosGhost]

At the moment, I am having the checks operate on specific locations which is not portable. It would be great if I could use cpp's search directory list to attempt to find the headers and then store their locations so I can do the function call checks.