IVEXP overly conservative in setting AVIS_MIN for _aplmod_()

Bugzilla Link	1113
Created on	Jan 27, 2014 21:22
Version	svn
OS	Linux
Architecture	PC

Extended Description

This fault has been around since the invention of F_aplmod_().
The problem is that IVEXP fails to set AVIS_MIN when the modulus
is known to be positive.
This caused an AWLF unit test failure for relax*sac, due to
the presence of things such as rotate( -1, mat).
The following test case shows the problem, when compiled with -doawlf -nowlf.
The _ge_() should be CF'd away, because the aplmod() result is guaranteed
to be non-negative. 
int[*] id(int[*] y)
{ 
  return(y);
}
int main()
{
  x = id( 5);
  x = _max_SxS_( x, 1);
  z = _aplmod_SxS_( -1, x);
  z = _ge_SxS_( z, 0);
  z = _sub_SxS_( toi( z), 1);
 return(z);
}
Fix coming as soon as I test it...