[bigloo] Curious Behavior With define Syntax

[Joseph Donaldson]

Hello, Manuel,
Today, I noticed, via a typo, that Bigloo (specifically 
bigloo4.3b-alpha26Aug17) accepts procedure definitions of the following form:
(define (demo a a) (print a))
Granted one does not make such a definition on purpose, so I don't believe it 
causes many problems, but it would be nice if the compiler and interpreter gave 
an error in such cases.
Thank You,Joseph Donaldson