[pdd22io]  Add the method 'flush' (lost between ParrotIO and FileHandle) The I/O library of Lua needs it.
[pdd22io] 
Add the method 'flush' (lost between ParrotIO and FileHandle)
The I/O library of Lua needs it.



git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@33770 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot