Enable paramiko to ask whether to add keys to known hosts.
Closing stdin too early.
Close the named temporary file.
Lock around SSH connectivity to new hosts in host checking mode such that prompts for host approval
messages do not get interlaced.
Default to 'smart' transport, which will use OpenSSH if it can support ControlPersist.
- optimize for the extremely common case of people specifying pkg names which are, ultimately, already installed
  on a system here time went from  16s for a series of pkgs to 3s to just
  check that they were installed.
Improve interlaced output prevention when asking for host key approval.
Talk more about transports in documentation.
Mention envrionment variable configuration.
Document 'smart' option and connection type default changes.
Update the releases list.

Conflicts:

	RELEASES.txt
Update packaging changelogs.

Conflicts:

	packaging/rpm/ansible.spec
Merge in release notes from 1.2.1
Revert "ini_file: add support for lists of options/values"

Breaks "," values in INI files

This reverts commit af051d6f77db306a555f71121f14c745a4ed0363.