[PERDITION-USERS] CDB support in perdition

Hi All, We're using Exim for our mail delivery and have standardised on CDB for large lookup tables so we wanted to use a single lookup table for both Exim and Perdition. Having pulled down perdition and discovered that it didn't support CDB, I've created a patch to add it by using the TinyCDB library. We're planning on putting this live in the next month or so after a little more testing. Sorry if the patch isn't 100% correct for the build system, but this is the first time I've hacked on automake. The patch is against 1.17.1. Thanks for the excellent software Simon! Ian.