gnc-module tests:
 test-gwrapped-c.c: load a gnc-module from Scheme and test gwrapped fns
 test-load-c.c: load a gnc-module from C
 test-load-deps.{c,scm}: load a module that depends on another module
 test-load-scm.scm: basic module load test from Scheme
 test-scm-module.c: add a Scheme module load to the init fn and make sure
                    the symbols are visible
 test-scm-multi.{c,scm}: load multiple gnc-modules from Scheme


gnc-module support files:
 mod-{foo,bar,baz}/: sample modules for testing