Gsutil

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New Features
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- Implemented gsutil setmeta command.
- Made gsutil understand bucket subdir conventions used by various tools
(like GCS Manager and CloudBerry) so if you cp or mv to a subdir you
created with one of those tools it will work as expected.
- Added support for Windows drive letter-prefaced paths when using Storage
URIs.

Bug Fixes
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- Fixed performance bug when downloading a large object with Content-
Encoding:gzip, where decompression attempted to load the entire object
in memory. Also added "Uncompressing" log output if file is larger than
50M, to make it clear the download hasn't stalled.
- Fixed naming bug when performing gsutil mv from a bucket subdir to
and existing bucket subdir.
- Fixed bug that caused cross-provider copies into Google Cloud Storage to
fail.
- Made change needed to make resumable transfer progress messages not print
when running gsutil cp -q.
- Fixed copy/paste error in config file documentation for
https_validate_certificates option.
- Various typo fixes.

Other Changes
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- Changed gsutil to unset http_proxy environment variable if it's set,
because it confuses boto. (Proxies should instead be configured via the
boto config file.)

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New Features
------------

- Added cp -q option, to support quiet operation from cron jobs.
- Made config command restore backed up file if there was a failure or user
hits ^C.

Bug Fixes
---------

- Fixed bug where gsutil cp -R from a source directory didn't generate
correct destination path.
- Fixed file handle leak in gsutil cp -z
- Fixed bug that caused cp -a option not to work when copying in the cloud.
- Fixed bug that caused '/-' to be appended to object name for streaming
uploads.
- Revert incorrect line I changed in previous CL, that attempted to
get fp from src_key object. The real fix that's needed is described in
https://github.com/GoogleCloudPlatform/gsutil/issues/72.

Other Changes
-------------

- Changed logging to print "Copying..." and Content-Type on same line;
refactored content type and log handling.

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Bug Fixes
---------

- Included the fix to make 'gsutil config' honor BOTO_CONFIG environment
variable (which was intended to be included in Release 3.12)

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New Features
------------

- Added support for configuring website buckets.

Bug Fixes
---------

- Fixed bug that caused simultaneous resumable downloads of the same source
object to use the same tracker file.
- Changed language code spec pointer from Wikipedia to loc.gov (for
Content-Language header).

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New Features
------------

- Added support for setting and listing Content-Language header.

Bug Fixes
---------

- Fixed bug that caused getacl/setacl commands to get a character encoding
exception when ACL content contained content not representable in ISO-8859-1
character set.
- Fixed gsutil update not to fail under Windows exclusive file locking.
- Fixed gsutil ls -L to continue past 403 errors.
- Updated gsutil tests and also help dev with instructions on how to run
boto tests, based on recent test refactoring done to in boto library.
- Cleaned up parts of cp help text.

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Bug Fixes
---------

- Fixed bug that caused extra "file:/" to be included in pathnames with
doing gsutil cp -R on Windows.