patches for 6.5

Hi,

I have some patches for version 6.5 (postgresql.snapshot.tar.gz dated Mar 26):

varchar-array.patch    this patch adds support for arrays of char() and
            varchar(), which where always missing from postgres,
            and also fixes a bug in the catalog definition of
            array_in(). You can now define filds as:

                x  char(12)[],
                y  varchar(9)[],

block-size.patch    this patch fixes many errors in the parser and other
            program which happen with very large query statements
            (> 8K) when using a page size other than 8192.
            The patch also replaces all the occurrences of `8192'
            and `1<<13' in the sources with the proper constants
            defined in various include files.

            I found a little problem with this patch: flex defines
            an internal buffer size of 16K which is obviously
            inadequate with large queries. I solved the problem
            replacing 16K with 64K with sed, but this introduces
            some constants hardwired in the Makefiles, which I
            don't like very much. I don't even know if this fix
            is portable with other versions of flex. If someone
            has a better idea it is welcome.

In the .tgz attachment there are also two sql file I used for testing.

--
Massimo Dal Zotto

+----------------------------------------------------------------------+
|  Massimo Dal Zotto               email: dz@cs.unitn.it               |
|  Via Marconi, 141                phone: ++39-0461534251              |
|  38057 Pergine Valsugana (TN)      www: http://www.cs.unitn.it/~dz/  |
|  Italy                             pgp: finger dz@tango.cs.unitn.it  |
+----------------------------------------------------------------------+