pgsql: Change expandRTE() and ResolveNew() back to taking just the

Log Message:
-----------
Change expandRTE() and ResolveNew() back to taking just the single
RTE of interest, rather than the whole rangetable list.  This makes
the API more understandable and avoids duplicate RTE lookups.  This
patch reverts no-longer-needed portions of my patch of 2004-08-19.

Modified Files:
--------------
    pgsql/src/backend/optimizer/path:
        allpaths.c (r1.129 -> r1.130)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/path/allpaths.c.diff?r1=1.129&r2=1.130)
    pgsql/src/backend/optimizer/prep:
        prepjointree.c (r1.27 -> r1.28)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/prep/prepjointree.c.diff?r1=1.27&r2=1.28)
    pgsql/src/backend/optimizer/util:
        plancat.c (r1.109 -> r1.110)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/util/plancat.c.diff?r1=1.109&r2=1.110)
    pgsql/src/backend/parser:
        parse_clause.c (r1.140 -> r1.141)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/parse_clause.c.diff?r1=1.140&r2=1.141)
        parse_coerce.c (r2.130 -> r2.131)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/parse_coerce.c.diff?r1=2.130&r2=2.131)
        parse_relation.c (r1.109 -> r1.110)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/parse_relation.c.diff?r1=1.109&r2=1.110)
        parse_target.c (r1.134 -> r1.135)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/parse_target.c.diff?r1=1.134&r2=1.135)
    pgsql/src/backend/rewrite:
        rewriteHandler.c (r1.153 -> r1.154)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/rewrite/rewriteHandler.c.diff?r1=1.153&r2=1.154)
        rewriteManip.c (r1.90 -> r1.91)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/rewrite/rewriteManip.c.diff?r1=1.90&r2=1.91)
    pgsql/src/include/parser:
        parse_relation.h (r1.49 -> r1.50)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/parser/parse_relation.h.diff?r1=1.49&r2=1.50)
    pgsql/src/include/rewrite:
        rewriteManip.h (r1.40 -> r1.41)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/rewrite/rewriteManip.h.diff?r1=1.40&r2=1.41)