Do not rely on keyword arguments for __import__()

This is the only change currently needed for backward compatibility with
Python 2.4, so Logster can be used on RHEL 5.x hosts out of the box.
Fix import

ErrorLog and Squid parsers couldn't find logster_helper
Merge pull request #35 from adobo/fix_imports

Fix ErrorLog and Squid parsers
Merge pull request #34 from elasticdog/python24

Do not rely on keyword arguments for __import__()
add new feature for Amazon Web Service CloudWatch
Add new feature for Amazon Web Service CloudWatch
Add options for aws key, aws secret key
Delete debug msg
Update README with Amazon CloudWatch instructions
Fix import method
remove testing on python 3.1
Add some test for Amazon CloudWatch
Add unittest for Amazon CloudWatch
Fix testing on python 3.2
Fix testing on python 2.5
Remove bytes function on python 2.5
Merge pull request #39 from rafael81/logster-master

add new feature for amazon web service cloudwatch