Merge topic 'minor-fixes'

b32b717b cmInstallCommandArguments: do not access static members through `this`
7eaa964e cmProcessTools: fix minor issue introduced by 595feb32
85a7eaba cmGeneratorTarget: remove dead code
3345e2a2 cmcmd: let operator<< for NumberFormatter reset the stream's format flags

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1349