This directory contains unit tests for engine.  We are using googletest (gtest) currently,
but only in a fairly naive manner.

gtest plays well with libgc, I believe, although it didn't use to.

The one thing we need to link in besides the M2 engine library file, is M2-cpp-replacement.cpp, which defines the system_interrupted()
function (to do nothing), which normally is supplied by the Macaulay2 executable.    
            
Autotools build:    
  Run tests (and compiles them) using: make -k check
  Currently, the source files are compiled during 'make'
