Remove S*I comments from Stephan.

src/backend/executor/execAmi.c

src/backend/nodes/readfuncs.c

src/backend/parser/analyze.c

src/backend/parser/gram.y

src/backend/parser/keywords.c

src/backend/rewrite/rewriteHandler.c

src/backend/rewrite/rewriteManip.c

src/include/executor/nodeGroup.h

src/include/nodes/parsenodes.h

src/include/parser/analyze.h

src/include/utils/elog.h

src/interfaces/ecpg/preproc/keywords.c

src/interfaces/ecpg/preproc/preproc.y