Synced parser.

src/interfaces/ecpg/ChangeLog

src/interfaces/ecpg/preproc/keywords.c

src/interfaces/ecpg/preproc/preproc.y

src/interfaces/ecpg/test/expected/connect-test1.c

src/interfaces/ecpg/test/expected/connect-test1.stderr

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

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

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

src/interfaces/ecpg/test/sql/Makefile

src/interfaces/ecpg/test/sql/update.pgc