Each subdirectory represents a set of related tests. Each one contains: * one or more files with names beginning "input-" The prefix will be stripped and they will be copied into a new directory before beginning the test. The script will run from this directory. * a file "command" giving the parameters to bernard * one or more files with names beginning "output-" Each of these is a test. Its contents will be compared with a file of the same name in the new directory. "output-stdout" is a special case; it represents whatever was printed to stdout. The comparison is exact, except for the "PO-Revision-Date" header.