files.  Fix sequence creation hack for relkind type.

not in target list.

From: David Hartwig <daveh@insightdist.com>

Here is a patch to remove the requirement that ORDER/GROUP BY clause
identifiers be included in the target list.

    below  is  the patch to have views to override the permission
    checks for the accessed tables. Now we can do the following:

    CREATE VIEW db_user AS SELECT
         usename,
         usesysid,
         usecreatedb,
         usetrace,
         usecatupd,
         '**********'::text as passwd,
         valuntil
        FROM pg_user;

    REVOKE ALL ON pg_user FROM public;
    REVOKE ALL ON db_user FROM public;
    GRANT SELECT ON db_user TO public;

ExecReScan for nodeAgg, nodeHash, nodeHashjoin, nodeNestloop and nodeResult.
Fixed ExecReScan for nodeMaterial.
Get rid of #ifdef INDEXSCAN_PATCH.
Get rid of ExecMarkPos and ExecRestrPos in nodeNestloop.

varchar length.

Cleans up code so attlen is always length.

Removed varchar() hack added earlier.

Will fix bug in selecting varchar() fields, and varchar() can be
variable length.

Another PGINDENT run that changes variable indenting and case label indenting.  Also static variable indenting.

spi.c: functions to prepare/run and preserve plans for
       duration of transaction/session. Some data utilities.

Use  for 'selct .. into ..' copy of TupleDesc (without constraints)
#ifdef NOT_USED for resetVarAttrLenForCreateTable (just free tupdesc copy)