[QScintilla] copy and paste

[Juan Fernando Estrada]

qscintilla snapshot 2006-07-30 have ocasionally copy paste bug

when i copy (ctrl-c) a text block and then paste (ctrl-v) 
qscintilla insert "null" text 

example when i copy that

# -*- coding: latin1 -*- 

from wglobal import *


class f_impresion(wDialog):
  def __init__(self,i_parent=None,**args):
    wDialog.__init__(self,i_parent,i_className=__name__,
                     i_title=":::Impresion de Guias:::")
    self.loadUiFile(__name__)
    return



and then paste qscintilla insert that

# -*- 
coding:latNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNULNUL