tree cea10ed9ff331690a86b7a8ad52966bea324aaaa
parent 4154581cd821de05489f6607055362e5070ea0fb
author Simon Stewart <simons@fb.com> 1375894042 -0700
committer Michael Bolin <mbolin@fb.com> 1376436958 -0700

Skip entries to a zip that are duplicates.

Summary:
The default java ZipOutputStream complains bitterly if you add more than one entry with
the same name. Avoid that entirely by silently skipping those duplicate entries. Looking
around, this seems to be the behaviour of things like JarJarLinks, which is commonly
used for creating uber-jars.

Test Plan: buck test --all