[Libguestfs] [common PATCH v2 1/1] options: add '--blocksize' option for C-based tools

[Richard W.M. Jones]

This version fixes the trailing whitespace problem, and having the
"blocksize-option.pod" file makes sense as well.  (One day we should
do the same for --format and other options).  Still a certain amount
of whitespace-change-only hunks going on though.

Rich.

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