Add setisodate utility.

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

src/setisodate/.params

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+app c setisodate sbin

src/setisodate/000_TopSource.c

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+/* libiso8601/src/setisodate/000_TopSource.c
+ *
+ *  (c)2007, Laurence Withers, <l@lwithers.me.uk>.
+ *  Released under the GNU GPLv2. See file COPYING or
+ *  http://www.gnu.org/copyleft/gpl.html for details.
+*/
+
+/* Below are all the includes used throughout the application. */
+#include <stdio.h>
+#include "iso8601.h"
+
+
+
+int main(int argc, char* argv[])
+{
+    struct iso8601_date d;
+    char str[100];
+
+    if(argc != 2) {
+        fputs("Expecting one argument: date/time (in ISO8601 format) to set.\n", stderr);
+        return 1;
+    }
+
+    if(iso8601_parse(argv[1], &d, 0, 0)) {
+        fputs("Cannot parse date.\n", stderr);
+        return 1;
+    }
+
+    printf("Setting date to %s.\n",
+        iso8601_print(str, sizeof(str), &d, 0));
+
+    if(iso8601_set_sysclock(&d)) {
+        perror("iso8601_set_sysclock");
+        return 1;
+    }
+
+    return 0;
+}
+
+
+
+/* options for text editors
+kate: replace-trailing-space-save true; space-indent true; tab-width 4;
+vim: expandtab:ts=4:sw=4
+*/

src/setisodate/build.app

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+# These are external variables, and shouldn't clash with anything else
+#  setisodate
+#  setisodate_BUILT
+#
+
+build_target libiso8601
+
+if [ -z ${setisodate_BUILT} ]
+then
+    setisodate="obj/setisodate"
+    EXTRAS="${libiso8601} ${libiso8601_DEP_CFLAGS} ${libiso8601_DEP_LIBS}"
+
+    echo "Building application ${setisodate}..."
+
+    do_cmd source src/setisodate/build.monolithic || return 1
+
+    MODIFIED=0
+    for test in ${MONOLITHIC_TESTS} ${SRC}
+    do
+        if [ ${test} -nt ${setisodate} ]
+        then
+            MODIFIED=1
+            break
+        fi
+    done
+
+    if [ ${MODIFIED} -ne 0 ]
+    then
+        echo " Compiling..."
+
+        do_cmd ${CC} ${CFLAGS} -I obj -o "${setisodate}" ${SRC} ${EXTRAS} || return 1
+
+        print_success "Application built"
+    else
+        print_success "Application up to date"
+    fi
+
+    setisodate_BUILT=1
+
+fi
+
+# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/setisodate/build.default

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+source src/setisodate/build.app

src/setisodate/build.install

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+source src/setisodate/build.install-app

src/setisodate/build.install-app

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+build_target setisodate
+
+# make paths (this is for Gentoo in particular)
+build_dir_tree "${SBINDIR}" || return 1
+
+# install binary
+echo "Installing binaries into '${SBINDIR}'"
+install_file "${setisodate}" "${SBINDIR}" 0755 || return 1
+print_success "Done"
+
+# kate: replace-trailing-space-save true; space-indent true; tab-width 4;
+# vim: syntax=sh:expandtab:ts=4:sw=4

src/setisodate/build.monolithic

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+# 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