Finished merging in src/backend from Dr. George's source tree

src/backend/bootstrap/bootstrap.c

src/backend/commands/copy.c

src/backend/libpq/pqcomm.c

src/backend/parser/Makefile.inc

src/backend/parser/gram.y

src/backend/parser/scan.l

src/backend/parser/scansup.c

src/backend/postmaster/postmaster.c

src/backend/rewrite/rewriteManip.c