Adding Jack Jansen's version checking utility.
diff --git a/Tools/versioncheck/_checkversion.py b/Tools/versioncheck/_checkversion.py
new file mode 100644
index 0000000..a103bf9
--- /dev/null
+++ b/Tools/versioncheck/_checkversion.py
@@ -0,0 +1,16 @@
+"""This file (which is sourced, not imported) checks the version of the
+"versioncheck" package. It is also an example of how to format your own
+_checkversion.py file"""
+
+import pyversioncheck
+
+_PACKAGE="versioncheck"
+_VERSION="1.0"
+_URL="http://www.cwi.nl/~jack/versioncheck/curversion.txt"
+
+try:
+ _myverbose=VERBOSE
+except NameError:
+ _myverbose=1
+
+pyversioncheck.versioncheck(_PACKAGE, _URL, _VERSION, verbose=_myverbose)