This directory contains a version of the stack development with
the following components:

stack.h:    array-based stack data type, string now defined as char *
stack.c:    functional stack, including earlier bugfixes,
	    now including stack_as_str using my new dstr module.
test1.c:    first test case using CHECK_* macros
test2.c:    second test case using CHECK_* macros
test3.c:    third test case using CHECK_* macros
test4.c:    refactored fourth test case
test5.c:    new fifth test case, using as_str comparison for correctness checks
Makefile:   fully functional Makefile to compile and test test1..5
checker:    fully functional perl script
bool.h:     basic boolean type
check.h:    the CHECK_* macros

RESULT:     tests 1..5 pass.  Wow!  Maybe we've really made something
	    we can call a stack!
