Revision history for Perl extension DBQuery.

0.03  Mon Jun 29 16:53:04 2009
	- can miss out the arg: db_host, and optimize the test
0.02  Mon Jun 29 10:22:35 2009
	- modify name: DB to DBQuery.
0.01  Wed Jun 24 17:08:43 2009
	- original version created by cnangel.