Releases for Aegir-up (Vagrant-based Aegir virtual machine)

Changes since 7.x-2.0-rc1:

• Change aegir user's shell to bash.
• Add aegir2-dev blueprint.
• Move to Wheezy baseboxes for aegir2 blueprints.
• Update puppet-aegir.
• Add 'quiet' parameter, and use secure_mysql.
• Update docs.
• Add an Nginx blueprint.
• Fix aegir2 blueprint, and add shared_platforms directory via NFS.

Changes since 7.x-2.0-alpha2:

• Remove Git submodule, since d.o packaging doesn't support them, and replace by code copied from puppet-aegir.

Now uses a 32-bit base box if the host doesn't support 64-bit virtualization.

Another function/array thing... sigh.

This release marks a major milestone for the project, as it has just been re-factored as a Drush extension.

Added or fixed in the release:
* avoid domain name collisions
* validate that project names can be used in domains
* missing symlink to setting.rb in /lib, for veewee-based base-box creation
* some upstream fixes in puppet-aegir
* 'dev' project template
* ability to specify custom provision repos and branches
* custom Aegir makefile
* update to Aegir 1.7

Added intelligent handling of subnets and avoidance of VM name collisions to the aegir-up-init script

Fixed missing projects/ directory