[PATCH] "svnadmin dump --incremental" has no meaning without -r

Hi all,

I'm sending a patch for the first time, so forgive any errors...

Anyhoo, solving someone's "dump" problem on
http://www.svnforum.org/2017/viewtopic.php?t=7223 I saw that
the "svnadmin help dump" command doesn't indicate that the --incremental
switch can only be used if revision range
is also specified. So, please find this attached patch that fixes the help
message. Fill free to improve on the log message
or patch. I kind of found that obvious after reading the book, but I guess
some people don't :)

[[[
Fix svnadmin dump help message to bind --incremental switch to -r option.

* subversion/svnadmin/main.c
 (static const svn_opt_subcommand_desc2_t cmd_table[]): Group
  --incremental switch with the -r option in the dump subcommand
  help message.
]]]

Best regards,

---
  Miha Vitorovic
  Inženir v tehničnem področju
  Customer Support Engineer
   NIL Data Communications,  Tivolska cesta 48,  1000 Ljubljana,  Slovenia
   Phone +386 1 4746 500      Fax +386 1 4746 501     http://www.NIL.si
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