support for quotes strings in command module (via posix=False), related fixes to keep other things from breaking

Fix except statement in template module.

Python 2.4 (RHEL 5) does not know 'as'.

Sudo support operational in both playbooks and main program.   Implementation could use some cleanup.

Fix exception catching for py2.4

message text per skvidal's suggestion

Supplementary group membership now in users module

Remove support for membership from group module

Remote port and error check for old paramiko

Remove the group membership example.  There's not much to twiddle with
the group module.  Give examples for what is possible.

Use the user module to define group membership.

This adds two options to the user module: groups and append.  groups is
a comma-delimited list of supplementary groups a user should belong to.
If a user is currently a member of a group not listed in groups, the
user will be removed from it.  To change this behavior, use append=yes.
This will append the user to the list of supplementary groups and *not*
remove the user from unlisted groups.

fix up yum module for rhel5.

is not there at all or even updateable

if installed and updated available: apply update
if not installed and available: install

This relies on groupadd, groupmod, groupdel, and gpasswd utilities on
the system.  You can optionally modify the gid for the group.  You can
also add/remove a user to/from a group with the option member.  Member
state is defined with the option memberstate.

This changes the gid option to group.  One may provide a primary group
as either a gid or a name.  The module will then check to verify that
the group already exists.  If the group does not already exist, the
module will fail.

is not there at all or even updateable

if installed and updated available: apply update
if not installed and available: install

Catch jinja errors in template module