Add copyright mentions, per Tom Lane.

doc/FAQ_BSDI

src/bin/Makefile

src/bin/initdb/Makefile

src/bin/initdb/initdb.sh

src/bin/initlocation/Makefile

src/bin/initlocation/initlocation.sh

src/bin/ipcclean/Makefile

src/bin/pg_dump/Makefile

src/bin/pg_dump/pg_dump.c

src/bin/pgaccess/Makefile

src/bin/pgaccess/README

src/bin/pgaccess/copyright.html

src/bin/pgaccess/doc/html/copyright.html

src/bin/pgaccess/lib/help/copyrights.hlp

src/bin/pgtclsh/Makefile

src/bin/pgtclsh/pgtclAppInit.c

src/bin/psql/Makefile

src/bin/scripts/Makefile

src/bin/scripts/createlang.sh

src/bin/scripts/createuser