Improve superenv add/remove message.

* Now it includes all flags that are added or removed by superenv when
  passing "--verbose" or envvar VERBOSE or HOMEBREW_VERBOSE is set.
libuv 0.10.18

Closes #23353.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
kawa 1.14

Closes #23352.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
lightning 2.0.1

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
lightning: clean up configure flags
node 0.10.21