Various fixes and improvements

[gpoulter]

• Replace setup.py dependencies with pip requirements.txt
  • argparse is built-in on py2.7, setup.py tries to install over it.
  • boto package also found in ubuntu (on ec2 machines), setup.py tries to install over it too.
• Fix error-handling in cmd_send by catching BotoServer error instead of checking message.
• Improve logging in cmd_send by printing key=value pairs containing information
  about SES parameters, error code, request ID and message ID. Emitted log message of "timestamp key=value ..." format can be parsed natively by Splunk.
• Fix list_verified to sort addresses
• Change output of show_quota to match ses-get-stats.pl -q
• Change output of show_stats to match output of ses-get-stats.pl -s
• Remove out() function as it is no longer used
• Clean up argparse usage, handle main

[paltman]

I like everything here except for the change in the setup.py, can you explain why this change is needed? The package requires boto 2.0 and therefore belongs in install-requires of setup.py.

[gpoulter]

Ok, we can leave out setup.py revision then, I'll try figure out why it's not detecting the existing deps. I don't see a button to exclude it though, either I'll have to rebase again to leave it out and redo the pull request, or (simpler) add a reverting commit.

[gpoulter]

Now it will only require argparse if the Python version is known to lack a built-in argparse, is that ok?

[arcturusannamalai]

I found the new boto API has changed, and response struct has fields different than the code; current response has a format like,

{u'SendEmailResponse': {u'ResponseMetadata': {u'RequestId': u'0xLONGHEX'},
                        u'SendEmailResult': {u'MessageId': u'0xLONGHEX'}}}

due to this the postman send command will not respond correctly.