works in Ansible in general.

If the inventory file is EXECUTABLE, treat it as a file returning JSON, if called directly, return the host
and groups list.  If called with an argument of a host name, return the key=value data for that particular
host.

note some changed=True/False detection bits in file module still need tweaking

Because folks on RHEL 6 (not CentOS 6) have some issues with asciidoc, do not build the asciidoc from
the rpm or make install targets.  Also modify the make install (only) to copy over files into the library
directory since the setup.py does not do this (due to a distutils bug, more or less).

Add basic test of yum module (VERY basic) just to make sure syntax remains ok.  Need to do something
trivial for service and git module also.

Fix async to use the new argfiles method (wrapping brain around rock, really must write module development guide)

how it handles "advanced" pkgspecs for the state= cases

on the command line

Various additions to make sure timed out and failed hosts are taken out of the playbook even if failed
during setup, async tasks, or poll operations.  This introduced some redundancy so I've made some
notes in the code where things need to be refactored to remove them.

Annotate more files, fix missing imports messing with playbooks.  Hey Tim, please test your stuff :)