* update configuration system to use automake's aclocal program
* configure performs sanity check on CC and CFLAGS to avoid a misleading
failure that suggested cross-compiling was the cause
-* distribute test suites for cut, sort, tr (more will be integrated soon)
+* distribute test suites for cut, join, sort, and tr
* unexpand no longer gets in endless loop
* when verifying checksums, md5sum uses the binary mode flag from the
input stream rather than the one from the command line