raise errors when omitted, updated changelog with new modules.

Revert templating enhancements from 73dbab70 e6c28658 d409352c 9858b1f2 4587528b 9b1fe455 214b0b05 8d3db803 7f9504d1 5031104c 35cb9dc2 2bd8cb57 1e85c754

Enable imports to work on a snippet based system, allowing for instance a library of common EC2 functions
to be reused between modules.  See library/system/service and library/system/ping for initial examples.  Can
work the old way to just import 'basic', or can import the new way to import multiple pieces of code from
module_utils/.

  Migrated all examples: in DOCUMENTATION=''' string to standalone EXAMPLES=''' string
  Added deprecation warning to moduledev.rst and remove deprecated example from it
  Fixed up a few typos and uppercased some acronyms.
  add consistency to how EXAMPLES are formatted

This implements a basic --check mode which for now is only implemented on template & copy operations.  More detail will be shared with the list
shortly.

Add encoding lines to python modules such that they can take unicode options if they are fed them, since the
AnsibleModule stuff no longer base64 encodes for simplicity and speed reasons.

Port the file module over to the new common code infrastructure + cleanup some redundant imports since the module code already imports those things.

Save the transfer of the module file for new style modules, because we can inject the arguments into the modules.

Module consumers using the API don't have to know how this works.  base64 stuff is only there
because escaping a docstring inside a docstring was a bit of a challenge :)

The ohai and facter modules use /usr/bin/logger to log the fact that
they have been invoked.  I added 'import os' to the ping module
so that it could have the same syslog statements as the other modules.
I separated the condensed:
    shlex.split(open(argfile, 'r').read())
into two separate statements similar to the other modules.

still needs to daemonize.  Then, once done, playbook can be taught how to poll async within the
timing window.

CentOS5 has python 2.4 which doesn't have a built-in json
module