Eurodates by default

Hello!

The patch adds a configure option which enables using eurodates in PgSQL
by default (i.e. as if -e option of backend was given).
The patch allows to get rid unconvenient -o'e' option for postmaster.

IMHO this is pretty convenient for people like me whom
likes POSTGRES-like date output (DD-MM-YYYY) but cannot afford American
MM-DD-YY format.

The patch touches 3 files;
configure.in - to add the option
globals.c - to change default definition of the appropriate variable (if necessary)
pg_config.h.in - to define the respective compile-time constant

if there is an interest, I could try to add similar global variable
to guc.c (for use in postgresql.conf).

--
WBR, Yury Bokhoncovich, Senior System Administrator, NOC of F1 Group.
Phone: +7 (3832) 106228, ext.140, E-mail: byg(at)center-f1(dot)ru(dot)
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