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Changes since Pike 7.6: 
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o Stdio.* 
  Stdio.cp can now works recursively in a directory tree 
  Stdio.cp now keep permissions when copying 
  Added Stdio.recursive_mv which work on every OS and when destination isn't  
  on the same filesystem as the source 
 
o Process.popen 
   Process.popen is now able to run in nonblocking mode. If a second 
   argument is provided a file object will be opened witht that mode 
   and return, enabling for two way communication with the new 
   process. 
 
o PIKE_PORTABLE_BYTECODE 
   --with-portable-bytecode is now the default. Pike programs that have 
   been dumped on one architecture now can be decoded on another.