Signals library updated

From: Douglas Gregor (gregod_at_[hidden])
Date: 2001-11-25 15:35:15

The Signals library has been updated; the new version is at:
http://groups.yahoo.com/group/boost/files/Callback/signals-20011125.tgz

Changes in this version include:
  - Fixes for MSVC and Borland C++
  - Added Documentation: design rationale & comparisons with other signals & 
slots implementations.
  - signal connection now meets the strong exception guarantee 
  - Jamfile fixes for building the "bindable.cpp" test
  - combined transform_iterator, skip_if_iterator, and input_caching_iterator 
into a single slot_call_iterator to reduce template depth and compiler 
confusion.

        Doug