add apt_repository module

add pip module

Add supervisorctl module

Add easy_install module

fix up yum state=latest with pkg groups

Make exception more specific (OSError) in setup module for selinux call

want to install an old package happy.

Abstract how to look up user password to be more flexible

Fix error handling when switching versions

Protect all selinux calls with try/except

This adds user_password() to abstract how the user's password is looked
up.  If spwd is not available, this will read the shadow file for the
user's shadow entry.  This will then facilitate idempotent password
changes on hosts without spwd.

Basically if umask is set to something like 0007 then chmod +r and chmod +x
are not the same as chmod a+r and chmod a+x

Using os.path.basename rather than source.split should make ansible more
portable (and even if never ported, more readable)

Add 'polite' YAML syntax validation and hinting

git module used to check stderr for the string 'error' after calling
switch_version().  This changes that to just look at the return code to
determine whether the command failed.  If the rc is not zero, the git
module will call fail_json().

The problem is that git checkout will summarize the commit message,
such as:

    HEAD is now at ea38409... removing artificial error

When the string 'error' is the commit message, this check will
erroneously think the command failed.

This also removes the method switchLocalBranch() since it is no longer
used.

login_unix_socket option for mysql modules

whitespace + remove deprecated YAML parser (migration script lives in examples/scripts and warning was added
in 0.6 release)

Fix some subtle behavior of how the get_url module chains into the file module, plus blend the results of daisy chain
operations in the correct order, so the file module results overlay the original module results, not the other way
around (which keeps any failure msg's intact)