Merge topic 'various-refactorings'

b48d5aeae7 find_*: Improve error message quoting consistency
d6d7ac51c8 cmFindPackageCommand.cxx: Optimize `cmStrCat()` calls
c3c9bc035c cmSearchPath: Drop unused parameter of `ExtractWithout` method
15b0feb704 cmFindCommon.cxx: Small optimizations

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !10043