git: sbin/hammer: Add some comments

[Tomohiro Kusumi]

commit 95c0f6b074ccb7db25dbec2f6c6d5a871b82b66b
Author: Tomohiro Kusumi <kusumi.tomohiro at gmail.com>
Date:   Thu Mar 19 00:45:06 2015 +0900

    sbin/hammer: Add some comments
    
    - Add some comments on hammer checkmap's collects data structure.

Summary of changes:
 sbin/hammer/cmd_blockmap.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/95c0f6b074ccb7db25dbec2f6c6d5a871b82b66b


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