prototype for filesystem plugin

- create a file named 'demo.txt'
- put the below information into this file:
  0.00 0.00 0.00 1/97 6061
- save it to your drizzle's deployment directory.
- at the drizzle prompt, create a table and select the contents from the table:
drizzle> CREATE TABLE LoadAverage (
            load1 DECIMAL(3, 2),
            load5 DECIMAL(3, 2),
            load15 DECIMAL(3, 2),
            active_processes VARCHAR(12),
            lastpid INTEGER) ENGINE=FILESYSTEM;

drizzle> select * from LoadAverage;
+-------+-------+--------+------------------+---------+
| load1 | load5 | load15 | active_processes | lastpid |
+-------+-------+--------+------------------+---------+
| 0.00 | 0.00 | 0.00 | 1/97 | 6061 |
+-------+-------+--------+------------------+---------+

It works! :-)