initial commit using a very minimalistic db abstraction preparing to add postgresql support as well

preparing for database consolidation

added a tweak option to change the sent time piler stores

code clean up in folder.c

switching to prepared statements in attachment.c

eliminated the mydomains piler.conf

introduced the server_id variable

added -a command line swith to reindex to reindex all stored emails

added tcp_wrappers support to the piler daemon

added recursive folder support to pilerimport

added folder support for piler daemon and pilerimport

minor fix for reindex

added a reindexing utility