Started to cleanup complex tests.

src/interfaces/ecpg/test/Makefile

src/interfaces/ecpg/test/complex/Makefile

src/interfaces/ecpg/test/expected/pgtypeslib-dt_test2.c

src/interfaces/ecpg/test/expected/pgtypeslib-dt_test2.stdout

src/interfaces/ecpg/test/expected/preproc-define.c

src/interfaces/ecpg/test/expected/preproc-define.stderr

src/interfaces/ecpg/test/expected/preproc-define.stdout

src/interfaces/ecpg/test/expected/preproc-init.c

src/interfaces/ecpg/test/expected/preproc-init.stderr

src/interfaces/ecpg/test/expected/preproc-init.stdout

src/interfaces/ecpg/test/expected/sql-array.c

src/interfaces/ecpg/test/expected/sql-array.stderr

src/interfaces/ecpg/test/expected/sql-array.stdout

src/interfaces/ecpg/test/expected/sql-binary.c

src/interfaces/ecpg/test/expected/sql-binary.stderr

src/interfaces/ecpg/test/expected/sql-binary.stdout

src/interfaces/ecpg/test/pgtypeslib/dt_test2.pgc

src/interfaces/ecpg/test/preproc/Makefile

src/interfaces/ecpg/test/preproc/define.pgc

src/interfaces/ecpg/test/preproc/init.pgc