Add files from parent branch HEAD:

	src/backend/access/common/printtup.c
	src/backend/commands/async.c
	src/backend/commands/copy.c
	src/backend/commands/portalcmds.c
	src/backend/executor/spi.c
	src/backend/executor/tstoreReceiver.c
	src/backend/tcop/dest.c
	src/backend/tcop/postgres.c
	src/include/tcop/dest.h