Moved the SQL DDL from ./sql to ./etc to join the other configuration
files.

Made changes to allow the installed configuration files to be located
more easily.
Changed percolate version requirement to 1.0.0

Bumped version
Added find_zone_name function

Changed to use `igroupadmin lg` to list groups
Changed base_dir function to fall back to current working directory if not installed
Enabled UTF8 support on IO
Use the new find_zone_name function to determine which zone a group should be in
Merge pull request #126 from keithj/devel

Refinements to iRODS support, UTF8 support and configuration