unicode database compression, step 3:

- use unidb compression for the unicodectype module.  smaller,
  faster, and slightly more portable...

- also mention the unicode directory in Tools/README
diff --git a/Tools/README b/Tools/README
index a0f5972..b5bdf2e 100644
--- a/Tools/README
+++ b/Tools/README
@@ -21,6 +21,9 @@
 		(by Tim Peters), which checks for inconsistent mixing
 		of tabs and spaces.
 
+unicode		Tools used to generate unicode database files for
+		Python 2.0 (by Fredrik Lundh).
+
 versioncheck	A tool to automate checking whether you have the latest
 		version of a package (by Jack Jansen).