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Martin and Mark, I want to play devil's advocate here just 
a bit:  How do we get away with, e.g., using expat.dll in 
Windows Python?  That is, we use the same expat.dll with 
the release and debug Python builds.  Nothing bad happens 
that I've seen, and we don't get warnings about mixing CRT 
types either.  IOW, we use expat.dll the way Anonymous 
would like to use the Python DLL.  How do we get away with 
that?

If that one is easy <wink>, ee don't use different versions 
of the Tcl/Tk libraries either.