change in polyfit()'s behaviour?

[Thomas Weber]

Hi, 

the following raises in error in the 3.0 branch:
	
	polyfit ([1,2; 3,4], [1,2; 3,4],4)
namely
error: polyfit: x and y must be vectors of the same size

In fact, this error is part of test_poly.m in the test/ subdirectory.


In the development sources, the test has been removed and the output is
now:

octave:1> polyfit ([1,2; 3,4], [1,2; 3,4],4)
ans =

   0.011358  -0.113585   0.397547   0.432076   0.272603

Is this change intentional, ie should polyfit handle matrices as input
arguments?

	Thomas