Updated mediawiki/extensions
Project: mediawiki/extensions/AWS  512e45f3c1d270b422e438231627ea1ef24d0ebf

Added file backend support for Amazon S3.

Patch created with code from Thai Phan.
Adds FileBackend class for Amazon S3.

Change-Id: Id2f1492fa7dc8d1467fcf0856080e4d12fd964cc