[Distutils] libraries options

[Thomas Heller]

Robin Becker writes
> It seems that the libraries options are different to the Extension ones.
> is it intentional that macros <> define_macros and that there is no
> equivalent to undef_macros?
I don't think so.
To me it seemed strange that I have to use an instance of Extension
to specify 'ext_modules', but have to supply dictionaries to 'libraries'.

ext_modules and libraries probably should be unified.

Thomas