Replaced manually synced preproc.y by the one created by the new script.

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

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

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

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

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

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

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

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

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

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

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

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

src/interfaces/ecpg/test/expected/sql-code100.c

src/interfaces/ecpg/test/expected/sql-code100.stderr

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

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

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

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

src/interfaces/ecpg/test/expected/sql-dynalloc2.c

src/interfaces/ecpg/test/expected/sql-dynalloc2.stderr