[Patch] fix docs in Parrot::Opcode

[Josh Wilmes]

Here's a fixed version of that patch I sent a while back:

Index: Parrot/Opcode.pm
===================================================================
RCS file: /home/perlcvs/parrot/Parrot/Opcode.pm,v
retrieving revision 1.7
diff -u -r1.7 Opcode.pm
--- Parrot/Opcode.pm    2001/09/20 14:39:17     1.7
+++ Parrot/Opcode.pm    2001/09/29 07:07:18
@@ -110,8 +110,9 @@
 read_ops() takes an optional argument: the file to read the opcode table
 from.
 
-The fingerprint() function returns the MD5 signature (in hex) of the
-opcode table.
+The fingerprint() function returns a checksum for the opcode table.  It is
+used to ensure that bytecode is only executed if it was generated for
+a version of parrot supporting the appropriate opcodes.
 
 =cut
 package Parrot::Opcode;