Log Message:
Update sysutils/fabric to 1.7.0.

pkgsrc changes:
---------------
FETCH_USING=curl, as PyPi moved to https only.

Upstream changes:
-----------------

2013-07-26: released Fabric 1.7.0

2013-07-26: released Fabric 1.6.2

[Feature] #925: Added contrib.files.is_link. Thanks to @jtangas for the
 patch.

[Feature] #922: Task argument strings are now displayed when using fab -d.
 Thanks to Kevin Qiu for the patch.

[Bug] #912: Leaving template_dir un-specified when using upload_template
 in Jinja mode used to cause 'NoneType' has no attribute 'startswith'
 errors. This has been fixed. Thanks to Erick Yellott for catch & to
 Erick Yellott + Kevin Williams for patches.

[Feature] #924: Add new env var option colorize_errors to enable
 coloring errors and warnings. Thanks to Aaron Meurer for the patch.

[Bug] #593: Non-ASCII character sets in Jinja templates rendered
 within upload_template would cause UnicodeDecodeError when uploaded.
 This has been addressed by encoding as utf-8 prior to upload.
 Thanks to Sébastien Fievet for the catch.

[Feature] #908: Support loading SSH keys from memory.
 Thanks to Caleb Groom for the patch.

[Bug] #171: Added missing cross-references from env variables
 documentation to corresponding command-line options.
 Thanks to Daniel D. Beck for the contribution.

[Bug] #884: The password cache feature was not working correctly with
 password-requiring SSH gateway connections.
That’s fixed now. Thanks to Marco Nenciarini for the catch.

[Feature] #826: Enable sudo extraction of compressed archive via use_sudo
 kwarg in upload_project. Thanks to @abec for the patch.

[Bug] #694: Allow users to work around ownership issues in the default
 remote login directory: add temp_dir kwarg for explicit specification of
 which “bounce” folder to use when calling put with
use_sudo=True.
 Thanks to Devin Bayer for the report & Dieter Plaetinck / Jesse Myers for
 suggesting the workaround.

[Bug] #882: Fix a get bug regarding spaces in remote working directory names.
 Thanks to Chris Rose for catch & patch.