create C-based library export symbols and build process for static/shared library

[samwalls]

If the library ends up being useful, it would be great to be able to use it from other languages via wrappers.

To facilitate this, the following would be needed:

• a complete set of export-specific functions
• type marshalling utilities if necessary
• documentation + scripts for building the go code as a static/shared library
• examples are always helpful (i.e. a C program showing library linkage, and use of the interface)

This is not urgent at all, and is not useful until everything is working / documented. However, it would open the door for API wrappers in any other language.

See Also:

• https://github.com/vladimirvivien/go-cshared-examples