perl 5.003_01: op.c

perl 5.003_01: op.c

Add warning for duplicate my() declaration in same scope
Allow redirection of debug/error messages
Add op_seq flag used by compiler
Add support for new GV type
Add comment indicating potential fix for memory leak when free OP_ANONCODE;
  however, this fix breaks eval of anon sub in closure
Carry G_KEEPERR setting down  from perl_call_sv() into nested evals
Remove problematic integer optimization of order comparisons
Add shared hash key support
Add optional version check to "use"
Rename newCONDOP() parameters to avoid collisions with systtem headers
Call imported "glob" function from "<*.*>"-style expansion
Use defgv directly for arg-less "shift" within sub
Permit spaces in prototype specifications