Hello Adar Dembo, Alexey Serbin, Kudu Jenkins,

I'd like you to reexamine a change.  Please visit

    http://gerrit.cloudera.org:8080/4038

to look at the new patch set (#2).

Change subject: tool: improve help output
......................................................................

tool: improve help output

- adds blank line in between usage summary and more detail
- better formatting for required parameters in usage
- better formatting for optional boolean parameters
- justifies the list of subcommands

Example output with subcommands:

Usage: ./build/latest/bin/kudu <command> [<args>]

<command> can be one of the following:
      fs   Operate on a local Kudu filesystem
     pbc   Operate on a PBC (protobuf container) files
  tablet   Operate on a local Kudu replica

Example output of a leaf node:

Usage: ./build/latest/bin/kudu pbc dump <path> [-oneline]

Dump a PBC (protobuf container) file
    path (path to PBC file) type: string default: ""
    -oneline (print each protobuf on a single line) type: bool default: false

Change-Id: I0b4fc2da2b03edf8ce6b9998eeabd06a4fcd216d
---
M src/kudu/tools/tool_action.cc
1 file changed, 38 insertions(+), 13 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/38/4038/2
-- 
To view, visit http://gerrit.cloudera.org:8080/4038
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I0b4fc2da2b03edf8ce6b9998eeabd06a4fcd216d
Gerrit-PatchSet: 2
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Adar Dembo <a...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>

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