[tar] Re-add first pass double space formatting.
[tar] Re-add first pass double space formatting.

Reverts whitespace change made in #222 to preserve the (special and
grepable) 2 blank lines for base plans with stage1 build dependencies.

Signed-off-by: Fletcher Nichol <77a0fd9e8048bbacd11af4e957bc6ff03b549f49@nichol.ca>

be-plans/be,be-plans/be,be-plans/be,be-plans/be