Log Message:
-----------
ecpg's preproc.y is now generated as needed, so remove from CVS.
Removed Files:
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pgsql/src/interfaces/ecpg/preproc:
preproc.y
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/preproc.y)