From: Stefano Zacchiroli <zack@upsilon.cc>
Date: Wed, 5 Oct 2005 09:00:48 +0000 (+0000)
Subject: - "load_from" no longer clears the previous registry, but instead merge it with loade... 
X-Git-Tag: V_0_7_2_3~253
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=c8162cf506d5e2444e9dee5ae91293013a8b0a43;hp=c8162cf506d5e2444e9dee5ae91293013a8b0a43;p=helm.git

- "load_from" no longer clears the previous registry, but instead merge it with loaded key,value pairs
- added "clear" method
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