Improved the error handling for AICc model selection.
The code now tells users with too small datasets (n<=k) why AICc model selection does not work in their situation.
This follows a discussion started at: https://mail.gna.org/public/relax-devel/2009-10/msg00015.html (# Message-id: <4ACD6F60.7060102@...>)
Authored by: semor 2009-10-09
Parent: [r9695]
Child: [r9697]
