- help resolve https://github.com/mitchellh/packer/issues/1533
  (although timeouts are always ultimately useless in a distributed
  system!)
- makes packer no more idempotent or janitorial than before
- derive maximum number of ticks from timeout
- default timeout to 300s (5m) to cater for global AMI copying
- allow user to override with AWS_TIMEOUT_SECONDS environment variable

Fix broken links docker builder docs.

The first link is to an outside page that doesn't exist anymore.
The second link is to the correct id.

Portability and explicitness

"Explicivity" is not a word.

Switch to hashicorp/go-msgpack

Clean VMX step should always remove floppy.

builder/qemu: Updates to QEMU builder - Fix -redir and machine type issues

make docker-push work with docker-tag artifacts

website: Add all boot commands from source to docs.

website: Minor edits

website: Update chef-solo.html.markdown

website: Update amazon.html.markdown

post-processor/parallels: Removed unnecessary filling the Vagranfile

website: ec2:ModifyImageAttribute already included in the sample policy

providers/aws: Ignore transient network errors when fetching AWS state.

website: Update example to match parameter.