checking in all the old panacean stuff

puttysrc/CHARSET/README

@@ -0,0 +1,15 @@
+This subdirectory contains a general character-set conversion
+library, used in the Unix port of PuTTY, and available for use in
+other ports if it should happen to be useful.
+
+This is a variant of a library that's currently used in some other
+programs such as Timber and Halibut. At some future date, we would
+like to merge the two libraries, so that all programs use the same
+libcharset.
+
+It is therefore a _strong_ design goal that this library should remain
+perfectly general, and not tied to particulars of PuTTY. It must not
+reference any code outside its own subdirectory; it should not have
+PuTTY-specific helper routines added to it unless they can be
+documented in a general manner which might make them useful in other
+circumstances as well.