boto/boto — pull request #1049 by tpodowd (2012-10-12 03:34:42+00:00)
Title: Add header support to multipart Upload Part - Copy

- Trivial change to all headers to be passed in to the copy_part_from_key() method and passed through to copy_key()
- Header support is required to set headers such as:
* x-amz-copy-source-if-match
* x-amz-copy-source-if-none-match
* x-amz-copy-source-if-unmodified-since
* x-amz-copy-source-if-modified-since