1.0.29.1: fix FILL

1.0.29.1: fix FILL

 * Imaginary parts were messed up on 64 bit platforms when
   filling arrays of (COMPLEX SINGLE-FLOAT). Thanks to Paul Khuong.

 * Also delay the transform of FILL till constraint propagation has
   run, to get the constant argument form MAKE-ARRAY in properly.

 * ...and eradicate remaining references to the SUPPORT file.