Major restructuring to switch build system from old scripts to GNU Automake.

tests/Display_-_--bytes.test

@@ -0,0 +1,17 @@
+#!/bin/sh
+#
+# Check that the byte counter counts.
+
+# Dummy assignments for "shellcheck".
+testSubject="${testSubject:-false}"; workFile1="${workFile1:-.tmp1}"
+
+dd if=/dev/zero bs=100 count=1 2>/dev/null \
+| "${testSubject}" -f -b >/dev/null 2>"${workFile1}"
+
+counterValue=$(tr '\r' '\n' < "${workFile1}" | tr -d ' ')
+test "${counterValue}" = "100B" && exit 0
+
+echo "unexpected byte counter value: ${counterValue}"
+exit 1
+
+# EOF