- Synced preproc.y with gram.y.

src/interfaces/ecpg/ChangeLog

src/interfaces/ecpg/lib/descriptor.c

src/interfaces/ecpg/lib/execute.c

src/interfaces/ecpg/preproc/descriptor.c

src/interfaces/ecpg/preproc/ecpg_keywords.c

src/interfaces/ecpg/preproc/output.c

src/interfaces/ecpg/preproc/preproc.y

src/interfaces/ecpg/preproc/type.c