cygwin and python21.lib: unresolved symbols

[Les Schaffer]

In trying to compile the python extension for cephes using cygwin tools, i
ran into troubles in the link phase with complaints about missing symbols of
the form, for example, PyTuple_Type (_imp__PyTuple_Type).

when i check a variety of python21.dll's using dependency walker, these
symbols are shown exported. when i check with cygwin's nm:

    nm python21.lib

they are missing. so maybe this is a cygwin problem. they are not ALL
missing, just some. 

has anyone else using cygwin run into these missing symbols? 

thanks

les schaffer