Support dynamic libraries

[egranata]

Add support for loading shared libraries into process' address space

This could be as simple as having explicit dlopen, dlsym calls - but for true victory points, it should go all the way to reading a shared library list off of ELF (recursively even..) and loading those at process startup

This task is likely to involve support for relocating dynamic objects

[egranata]

The main action item pending here is mapping shared libraries at process load and supporting resolution of undefined symbols in the main binary