Add setisodate utility.

This utility is capable of setting the system clock, taking its argument
in ISO8601 format.

src/setisodate/build.monolithic

@@ -0,0 +1,18 @@
+# These are external variables, and shouldn't clash with anything else
+#  setisodate_MONOLITHIC
+#
+
+SRC="obj/setisodate.c"
+MONOLITHIC_TESTS="src/setisodate/build.app src/setisodate/build.monolithic"
+
+if [ -z "${setisodate_MONOLITHIC}" ]
+then
+    MONOLITHIC_SOURCE="$(echo src/setisodate/*.c)"
+    make_monolithic ${SRC} C || return 1
+
+    setisodate_MONOLITHIC=1
+    MONOLITHIC_DOC="${MONOLITHIC_DOC} ${SRC}"
+fi
+
+# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
+# vim: syntax=sh:expandtab:ts=4:sw=4