less: make it behave better with `git-branch'
less: make it behave better with `git-branch'

Apparently git-branch now outputs to a pager by default. Most of the
time we don't have that many branches, so we should make it so that the
pager exits if the output can fit into one screen. This commit effects
that change.

listx/syscfg,listx/syscfg,listx/syscfg,listx/syscfg,listx/syscfg