[Maxima] "`map' is truncating" message and other assorted messages

[Raymond Toy RT/EUS]

If maperror is false, map prints out the above message every time map
has arguments of different length.

Is that really necessary?  Is there any way to turn them off?

Also, I get messages like

"Warning:  Float to bigfloat conversion of 0.4535961214255773"

Are these really necessary?  Especially after we fixed it so that the
float is converted to a bfloat "exactly", with doing a rationalization
process first.

Is it possible to turn this message off too?

Ray