(work in progress) Clean up build process and create a conda recipe

[jamie-arcc]

I would like to fix up the build process to make it more portable. Instead of having a makefile that must be manually edited to change configuration, I am going to set this up to work with CMake, so that it can be configured for a specific system. CMake will then generate the appropriate build files for a given build system (Make, Ninja, etc.). Once this is done, I want to create a conda recipe so that this can be installed in anaconda, which I think would be nice. Projects like this are well suited to anaconda.

[jamie-arcc]

Could I get some more information on some of the things in the current makefile? In particular, I am curious as to what the preprocessor options -DMEM1 and -DMEM2 are used for, as I can't seem to find them in any of the code itself.