Log Message:
-----------
Add BY clause to PL/PgSQL FOR loop, to control the iteration increment.

Jaime Casanova

Modified Files:
--------------
pgsql/doc/src/sgml:
plpgsql.sgml (r1.94 -> r1.95)
(http://developer.postgresql.org/cvsw...1=1.94&r2=1.95)
pgsql/src/pl/plpgsql/src:
gram.y (r1.90 -> r1.91)
(http://developer.postgresql.org/cvsw...1=1.90&r2=1.91)
pl_exec.c (r1.169 -> r1.170)
(http://developer.postgresql.org/cvsw...1.169&r2=1.170)
pl_funcs.c (r1.52 -> r1.53)
(http://developer.postgresql.org/cvsw...1=1.52&r2=1.53)
plpgsql.h (r1.74 -> r1.75)
(http://developer.postgresql.org/cvsw...1=1.74&r2=1.75)
scan.l (r1.49 -> r1.50)
(http://developer.postgresql.org/cvsw...1=1.49&r2=1.50)

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