Autogen: Documentation updates
This extends the documentation for
- :prop_tgt:
AUTOGEN_ORIGIN_DEPENDS
- :prop_tgt:
AUTOGEN_TARGET_DEPENDS
- :variable:
CMAKE_GLOBAL_AUTOGEN_TARGET
This extends the documentation for
AUTOGEN_ORIGIN_DEPENDS
AUTOGEN_TARGET_DEPENDS
CMAKE_GLOBAL_AUTOGEN_TARGET