"src/common/README"

This directory is for project-wide source code that doesn't
really belong in the fangutil library, nor does it belong exclusively
to any sub-module.  To the useful and unclassified, Welcome Home.  

An example of what might belong here are definitions that are
shared by different modules, such as intermediate data structures.  
Macros that are globall useful to this project should be placed herein.  

