Improved automation of INSTALL file generation.

items. Lookup history is now a double linked list, used in
a wrap-around style.

Jan

The latter updated accordingly. Also add `dist' and `distcheck' targets
to play with, but caveat packager.

Updated backend/bootstrap and backend/parser makefile to make them
marginally builddir aware and fix the usual set of things.

Add rule to automatically remake config.h dependent on config.h.in and
config.status. (Adopted from Autoconf manual and about every other
package.) On a good day we should now have a complete and accurate set
of dependencies throughout everything.

in a non-safe interpreter, so with full OS access! Language is
restricted to be used by DB superusers.

Added "argisnull n" and "return_null" commands to gain full control
over NULL values from new FMGR capabilities.

Jan

formatting differences due to new psql.

Jan

type different from input type but are expecting ExecAgg to insert the
first non-null input as the starting transition value.  This has always
been verboten, but wasn't checked for until now...

NOTE: this implementation of tcl_avg() fails with 'divide by zero'
for zero input rows.  It ought to return NULL, but pltcl does not
currently provide a way to do that, so I'm leaving the problem unsolved
for now.

bothering to clean up the resulting warnings ...

documentation. Therefore it's now installed by default. If there is no
documentation to be found (i.e., you are not using the distribution)
then this step is skipped.

Add --docdir option to configure to control installation directory.

portable.  Seems to have been added for O_BINARY, which is only needed
for __CYGWIN32__, so include it here only in that case.

There's now only one transition value and transition function.
NULL handling in aggregates is a lot cleaner.  Also, use Numeric
accumulators instead of integer accumulators for sum/avg on integer
datatypes --- this avoids overflow at the cost of being a little slower.
Implement VARIANCE() and STDDEV() aggregates in the standard backend.

Also, enable new LIKE selectivity estimators by default.  Unrelated
change, but as long as I had to force initdb anyway...

seems to be busted though ...

link needs to specify -lc but doesn't.  Quick hack to make it better.

stuff, but fixing the bug that existed in reporting the constraint name
changes the error line.  Patch to expected output enclosed.

Stephan Szabo