darcs-hash:f2b56b1049af40216c24d533e4e76ede40a73f89

darcs-hash:a1b1e2cde054302e5bd9c2499bdfa004a244ac40

- implement basic parsing support for the PostgreSQL record type

 - supply a utility function to escape binary data into a format that
   can be used within an SQL string to initialize a field of type
   BYTEA

 - add optimize declarations for improved performance

darcs-hash:e575d1fea8f22a1b00cd2f0797023849b1313a9b

Fix to timezone handling when parsing timestamps (timezone offset can
be negative).

From Katsuya Tomioka.

darcs-hash:656ed17ea7f0d6b56554558f2a5e7f67e60d032d

Three fixes from Björn Lindberg <d95-bli@nada.kth.se>:

   - Two trivial bugs with regards to use with Allegro

   - Handling of the special timestamp values infinity and -infinity. They
     gave an error, but now returns the symbols :INFINITY and :-INFINITY
     respectively.

   - A bug in the version 3 of the protocol, where it would return NIL for
     fields in the database containing the empty string, rather than an
     empty string.

darcs-hash:504e8e152c17d5b4a0d4aa402c8fe52e71647eef

Add support for the SQL NUMERIC type, thanks to Risto Sakari Laakso.
Was previously being parsed as an integer, but is in fact a fix-precision
floating-point number.

darcs-hash:23c7961c351a7e66d96ad0caccba1d1e7a16f501

Trivial.

darcs-hash:1c9fe1aad69e6db8aedec0ed2075b65e4cd9ee7d

add a file that does a manual load of pg

darcs-hash:ebc3809f360389db9d6269f534e5c184398afbb7

From Sven Van Caekenberghe:

  - fix to PARSE-TIMESTAMP when no milliseconds are present

  - make use of :start and :end arguments to PARSE-INTEGER to reduce consing

darcs-hash:9916a9922ce1ecf2f93980ea3791c71d95a97297

added type-to-oid table and lookup-type function to aid in bpe operations

darcs-hash:eb336c8c2d63270d1a75360bb4a2ffc2293fc407

Integrate Peter Van Eynde's v3 protocol support:

   - create PGCON-V2 and PGCON-V3 classes
   - PG-CONNECT attempts to connect using v3 protocol, and falls back
     to v2 protocol for older backends; return a PGCON-V2 or PGCON-V3
     object
   - PG-EXEC and FN and PG-DISCONNECT are generic functions that
     dispatch on the connection type
   - protocol code split into v2-protocol.lisp and v3-protocol.lisp

TBD: cleaning up the notification & error reporting support, and
factorizing more code between the two protocol versions.

Also split code out into multiple files:

   - large-object support
   - metainformation about databases
   - parsing and type coercion support
   - utility functions and macros

darcs-hash:00b6e900f7b48953d959f95e55c26ecee52efb37