Can we remove coeff()?

[Jeroen Demeyer <jdemeyer@cage.ugent.be>]

Hello pari-dev,

can the macro coeff() be removed from <paricast.h>? We have gcoeff() 
which does the same thing and which is also documented (coeff is not in 
the documentation).

The coeff() macro conflicts with NTL. It's especially bad because 
coeff() is a macro and macros do not care about C++ namespaces.

Thanks,
Jeroen.