Remove ugly and confusing double-newlines

It made the output harder to read.
getmail: fix installation

getmail was using the return value of install, which was removed

Closes #21918
zsh-completions 0.10.0

Closes #21917.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
reattach-to-user-namespace 2.2

Closes #21919.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
RethinkDB 1.8.0

Closes #21914.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
getmail: simplify slightly