Improve pg_archivecleanup and pg_standby --help output

For consistency with other tools, put the options before further usage
information.

In pg_standby, remove the supposedly deprecated -l option from the
given example invocation.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/b24181b26fc90758370e475088be4ef2497d3cc3

Modified Files
--------------
contrib/pg_archivecleanup/pg_archivecleanup.c |   12 ++++++------
contrib/pg_standby/pg_standby.c               |   10 +++++-----
2 files changed, 11 insertions(+), 11 deletions(-)

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Next:	From: Alvaro Herrera	Date: 2011-05-05 20:20:30
	Subject: Re: pgsql: Clarify error message when attempting to create index on foreign
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	Subject: pgsql: Clarify error message when attempting to create index onforeign