A note WRT constants in PASM/PIR

[Leopold Toetsch]

Explicit constants to opcodes like warnings{on,off} and errors{on,off} 
are likely to change in the future. Please use the constants from 
warnings.pasm or errors.pasm.

so don't do:
  errorsoff 1
but
  .include "errors.pasm"
  errorsoff .PARROT_ERRORS_GLOBALS_FLAG
leo