man-db: add a daily cron job to rebuild manpages cache.

--HG--
extra : convert_revision : 87e1ba47ca266f9a0510d38f94927815bf33da79

templates/man-db/files/man-db.cron-daily

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+# taken from Debian
+# man-db cron daily
+set -e
+
+if ! [ -d /var/cache/man ]; then
+    # Recover from deletion, per FHS.
+    mkdir -p /var/cache/man
+    chmod 755 /var/cache/man
+fi
+
+# regenerate man database
+/usr/bin/mandb --quiet
+
+exit 0
+