Make LD -r as macros that can be changed for QNX.

src/backend/optimizer/geqo/Makefile

src/backend/optimizer/path/Makefile

src/backend/optimizer/plan/Makefile

src/backend/optimizer/prep/Makefile

src/backend/optimizer/util/Makefile

src/backend/parser/Makefile

src/backend/port/Makefile.in

src/backend/port/nextstep/Makefile

src/backend/port/sunos4/Makefile

src/backend/postmaster/Makefile

src/backend/regex/Makefile

src/backend/rewrite/Makefile

src/backend/storage/Makefile

src/backend/storage/buffer/Makefile

src/backend/storage/file/Makefile

src/backend/storage/ipc/Makefile

src/backend/storage/large_object/Makefile

src/backend/storage/lmgr/Makefile

src/backend/storage/page/Makefile

src/backend/storage/smgr/Makefile