[Bug-ocrad] imaximum vss iminimum/minima

[lode leroy]

I would like to have maxima an minima to have similar prototypes in 
profile.cc

 int  imaximum() throw();
 int  iminimum( int m = 0, int th = -1 ) throw();
 int  minima( int th = -1 ) throw();

since imamimum is only used in one place, it should be easy to provide
backward compatibility when replacing
imaximum() with imaximum(int m = 0, int th = -1 )

are there strong objections?

-- lode