Issue #102 --help command line
Issue #107 command line checking and other error checking
Issue #112 uses getopt_long now, but FUSE's own parser is still there
some command line checking is split between main() and the
helper function
Issue #117 command line option for credentials file
Issue #118 use of environment variables for credentials
Issue #119 support for a local passwd-s3fs file
Big checkin, many new lines of code.
Comand line option checking is now more robust and does quite
a bit of error checking before handing the mount off to FUSE.
Cleaned up the code and made several new functions from
existing code
Many ways to supply credentials now and there is a precedance
order followed.
--help is helpful
git-svn-id: http://s3fs.googlecode.com/svn/trunk@227 df820570-a93a-0410-bd06-b72b767a4274
