Merge topic 'Ninja-use-depslog'

bb7a0497ef cmTransformDepfile: warn when a depfile is not written to
c22c473bde Tests/Ninja*/CustomCommandDepfile: check that deps are in the database
b0177003e1 cmGlobalNinjaGenerator: tell `ninja` to actually read the depfile
45eff9145e cmAddCustomCommandCommand: use `cmStrCat`
c6445c615b Tests/RunCMake/Ninja: fix subdir prefix check

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !8911