Released updated Tcl interfaces: pgin.tcl-2.1.0, pgtclng-1.5.1

Updated versions of these two implementations of the Tcl interface to
PostgreSQL were released recently:

pgin.tcl, the "pure-TCL" implementation, at:
http://gborg.postgresql.org/project/pgintcl/
Currently available for download:
+ pgintcl-2.1.0.tgz

pgtcl-ng, the libpq-based "next generation" implementation, at:
http://gborg.postgresql.org/project/pgtclng/
Currently available for download:
+ pgtcl1.5.1.tar.gz (Source distribution)
+ pgtcl1.5.1-win32.zip (Binary distribution for Windows)
+ pgtcldocs-20040609.zip (A Pgtcl Reference Manual)
You can look at the manual online, until it finds a better home, at:
http://lbayuk.home.mindspring.com/pgtcldocs/

Pgtclng is the "next generation" libpq-based Tcl interface to PostgreSQL.
It adds many new commands and features which take advantage of new
capabilities in the PostgreSQL-7.4 protocol and libpq client library.
Pgin.tcl is a Tcl interface to PostgreSQL which is written entirely in Tcl.
It is mostly but not entirely command-compatible with pgtclng. Both of
these implementations are only for use with PostgreSQL 7.4 and up.

New features in these releases include:
* Get command status tag with: pg_result -cmdStatus (suggested by levanj)
* Parse, bind, and execute SQL statement with: pg_exec_params,
complements pg_exec_prepared; both are binary safe.
* Extended pg_exec to support optional parameters (idea from karl's
implementation in Gborg pgtcl CVS); this is a text-format-only version
of pg_exec_params.
* Bug fix (pgin.tcl) and improvement (pgtclng) to pg_execute error handling.