Added new pg_id to fix initdb problems

INSTALL

doc/src/sgml/install.sgml

doc/src/sgml/ref/initdb.sgml

src/GNUmakefile.in

src/backend/access/heap/tuptoaster.c

src/bin/Makefile

src/bin/initdb/initdb.sh

src/bin/pg_id/Makefile

src/bin/pg_id/pg_id.c

src/bin/psql/copy.c

src/mkinstalldirs