README/developing packer: Mention the bazaar requirement.

Mention the bazaar requirement.

https://launchpad.net/tomb is the only package which uses bazaar so far.

website: Match default ec2-bundle-vol documented on the website to the one that's used by the code.

Issue #248 contained a PR which changes the way bundle_vol_command is
used by default. This change to the defaults was not reflected on the
website, so I encountered the same issue when making changes to the
bundle_vol_command in my config.

website: typo in vmware docs' YAML front matter

[GH-635]

This is so that things like vagrant post-processors and vsphere
post processors don't work.

/cc @mheidenr - Some basic cleanups. :)

added post-processor-vsphere

builder/vmware: Path related fixes in esx5 driver

/cc @matheeeny - Tests :)

/cc @matheeeny - I prefer to be more explicit and say this is the path,
rather than the secret value itself.

provisioner/chef-solo: add support for chef-solo encrypted data bags

/cc @rasa

post-processor/vagrant: skip gzip compression if compression_level=0

website: fix run-on italicizing for description of data_bags_path

underscore of "data_bags" should be escaped; causes run-on italic

Adds additional option to chef-solo provisioner for an encrypted data bag
secret file.  Local file is copied up and referenced in solo.rb

The initial check in Builder.Prepare does not use the OutputDir interface.
stepPrepareOutputDir also checks if OutputDir exists, error out there unless
using -force so we get the same behavior when RemoteType is esx5.

- Fixes builder/vmware when using RemoteType esx5,
  as there is no longer a local OutputDir

- Fix mkdir of packer_cache in ESX5Driver.UploadISO

- Fix vmx path in ESX5Driver.IsRunning