Commentary update.

# improvement [I had to test it], while final Intel P4 performance

# achieves respectful 432MBps on 2.8GHz processor now. For reference.

# If executed on Xeon, current RC4_CHAR code-path is 2.7x faster than

# RC4_INT code-path. While if executed on Opteron, it's is only 25%

# slower than the latter...

# RC4_INT code-path. While if executed on Opteron, it's only 25%

# slower slower than the RC4_INT one [meaning that if detecting CPU

# is not desired, then RC4_CHAR code-path should be preferred, as it

# provides better *all-round* performance].

$output=shift;

open STDOUT,"| $^X ../perlasm/x86_64-xlate.pl $output";