deprecated transcendental ops with I arguments

[Leopold Toetsch]

Transcendental (and some other) ops that have a FLOATVAL out argument 
and INTVAL source argument(s) are deprecated.

E.g.
   acos Nx, Iy
   atan Nx, Iy, Iz
Actually these opcodes aren't emitted any more, you'll get
   set $N0, Iy
   acos Nx, $N0
for registers or a floatval constant for constants.
For faster compilation speed your code generator should emit the 
floatval variants directly.

These opcodes are currently still in the ops files, with a function body 
DEPRECATED and a name prefix 'deprecated_' but will be removed soon.

$ grep ^deprec ops/ops.num
leo