Teach RecomputeDirty to load dyndep files that are ready
The full readiness of a node that has a dyndep binding cannot be known
until after the dyndep file is loaded. If a dyndep file is ready while
constructing the build plan it can be loaded immediately so full
information can be used to decide whether anything needs to be built.
If a dyndep file is not ready while constructing the build plan then the
edges naming it cannot be ready either because the dyndep file is one of
their inputs. In this case we defer loading the dyndep file until the
build plan is being executed.
2 files changed
