pgsql: Change "name" nonterminal in cursor-related productions to

Log Message:
-----------
Change "name" nonterminal in cursor-related productions to cursor_name.

This is a preparatory patch for allowing a dynamic cursor name be used in the
ECPG grammar.

Author: Zoltan Boszormenyi

Modified Files:
--------------
    pgsql/src/backend/parser:
        gram.y (r2.691 -> r2.692)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/gram.y?r1=2.691&r2=2.692)
    pgsql/src/interfaces/ecpg/preproc:
        ecpg.addons (r1.7 -> r1.8)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/ecpg.addons?r1=1.7&r2=1.8)
        ecpg.trailer (r1.13 -> r1.14)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/ecpg.trailer?r1=1.13&r2=1.14)