added TODO file

TODO

+- Better saintycheck:
+  * check that number of md5sums is correct
+  * verify that there is a Maintainer
+
+- Automatically add $install to $source
+
+- Fetch sources from a specified mirror
+
+- Automatic dependency tracing
+
+- Find out how to "notify" kernel packages when kernel source is updated
+  Whenever the kernel source is updated, all kernel packages depending on
+  it should change the revision number and be rebuilt.
+
+- Find out what to do with user accounts that is needed during build time.
+  (i.e gnats).