Merge topic 'ninja-1.10'

c81a86ee6d Ninja: Record dyndep support by Ninja 1.10
83368b4dd5 Ninja: Drop unused dyndep version check
fd58bb83e6 Ninja: Use in-class initialization of global generator members

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !3256