Log Message:
-----------
Make argument const char * as per Takahiro Itagaki's suggestion.
Modified Files:
--------------
pgsql/src/interfaces/ecpg/ecpglib:
prepare.c (r1.35 -> r1.36)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/prepare.c?r1=1.35&r2=1.36)