proper bin path now called

Fixes #1938.

Fixes hangs observed with large amounts of output, as it would get into
a dead-lock.

* improves error handling and reporting
* uses run_command to reduce code
* fails quicker on errors as opposed to return codes and tracebacks
* can now also specify the key as data versus needing to wget it from a file

Default to -H to set $HOME appropriately.

adjusted assemble to use new file attribute handling

whitespaces in FULL_PATH cause an error to get ANSIBLE_PATH

fixed check for required_together

library/apt: consistently use underscores in examples.

add env vars for plugins action,callback,connection,lookup,vars,filter

Update packaging/arch/PKGBUILD

Reorganizing changelog, some cleanup still needed, but now it's easier to tell what is in the release :)

To be consistent with the table showing available options, use
underscores in the example tasks, not hyphens, as the table doesn't
list hyphenated versions of option names, so it looks like the
examples could have typos in them.

updated indentation and redundant comment.

bumping up min_count value.

I've uncommented and added a very little supporting stuff based on skvidal's work to allow us to launch more than one instance.

Fixed apt_key's add_key stalling indefinitely, and test code leaking into production

Add basic pkgin package management

ec2 facts module - registers to ansible_facts key

Git module: fix for relative paths