Added aws library
added an initial attempt at an S3 filesystem object
file-info-seq should return empty list for non-existent s3 object
fixed a bug in normalize-filename for s3 objcts
added some test cases for s3
got test cases to work. Fixed some directory issues. Added 'ignore' support
Moved options out to its own file to prevent circular dependencies
load aws credentials from a file specified on command line options
s3 credentials from properties file
fixed tests
commented out s3 tests to keep them from interfering with the rest of the world
Made changes supporting pull request for issue #60
cleanup temp files in s3 regtest
Added some error handling to the s3 credentials file loader.
Prep for pull request
reformatted long string
reformatted long string
merge