Allow encoding used for socket communication with the backend to be
specified as a keyword argument to PG-CONNECT, for cases where
rebinding *PG-CLIENT-ENCODING* is inconvenient.

Add a simple test for encoding support.

(From Attila Lendvai <attila.lendvai@gmail.com>)

darcs-hash:9f1f315eb332972142eadea0eff9cb70e5702ece

More additions to the testing code: testing reporting of floating point overflow
and underflow, array syntax, more bitvector tests.

darcs-hash:1cb791a745cf28dc05dfa478efda5aea402a2593

Added numerous additional tests, for string support, various types of
errors signaled by PostgreSQL, integer overflow, transactions, arrays,
bit-tables, prepared statements using TEXT parameters.

darcs-hash:72a804e8f855a32fb4e693b983f99ee0d6484060

Minor fix to tests for PostgreSQL 8.0: the MONEY type is deprecated.

darcs-hash:5294d2099412ba7fd1a915a503dcb5e23f444738

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

Implement binary-mode transfers for large-object operations in the v3
protocol. The v2 protocol transfers arguments in binary mode, but the
v3 protocol requires the client to specify for each argument of a
FunctionCall whether it is encoded as binary or as text.

  - add possibility to send (unsigned-byte 8) arguments to function calls

  - add a method READ-OCTETS-FROM-PACKET that reads raw octets

  - make PG-IMPORT and PG-EXPORT use binary I/O

  - PGLO-READ reads data in binary

  - change the large-object tests to use binary I/O (fixes the pglo test)

darcs-hash:bda38e377fe3d2bf89d34065e942299e065fdd90

add a file that does a manual load of pg

darcs-hash:ebc3809f360389db9d6269f534e5c184398afbb7

now COPY IN/OUT actually works, also created test-case

darcs-hash:2df2bd8c7eb9c8188f2f7e7d071ee0e256860085

- fix to the lowlevel factorization

 - modify parameter handling in v3 protocol to add parameters to the
   connection object, instead of issuing a warning

darcs-hash:82327edc147c2403516468713a8c403b5b6d0648

More factorization of lowlevel functions between v2 and v3 protocols.

darcs-hash:aef9e7feac79e0d6b749d3ff999a62e1f50c4d69

added pbe test

darcs-hash:0046c1392f941d87f61e2f18f3b412dd499a218f

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

initial import

darcs-hash:3eba5477bf5e3b095b88e97e474746b61304a343