Issue #9720: zipfile now writes correct local headers for files larger than 4 GiB.

diff --cc Lib/zipfile.py
Simple merge

diff --cc Misc/NEWS
index 1a42233c25e5b58e6442b75bdc575eb1026c28eb,292138d067e3850ae77b5e2c8623a901e6618291..d30a1d3fb3ce94e793d6a089d57c1c8cd8aada6f
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -217,8 -147,9 +217,11 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #9720: zipfile now writes correct local headers for files larger than
+   4 GiB.
+ 
 +- Issue #5066: Update IDLE docs. Patch by Todd Rovito.
 +
  - Issue #16955: Fix the poll() method for multiprocessing's socket
    connections on Windows.