Commit 01ea9eaac373d9f3de6e56c1ca26cdcd259ecc8e

Behdad Esfahbod 2016-03-11T18:50:02

[build] Use tar-ustar instead of tar-pax The default tar-v7 is not good enough for us (99 char filename limit), so I have had bumped to tar-pax. We got one complaint that someone's tar couldn't handle tar-pax. Set to tar-ustar which is ~13 years earlier than tar-pax and is good enough for us.