Incremental C++ Build

NINJA-config.sh                                 137
asdl/NINJA_subgraph.py                           56
bin/NINJA_subgraph.py                           141
build/ninja-rules-cpp.sh                        390
build/ninja-rules-py.sh                         364
build/ninja_lib.py                              556
build/ninja_lib_test.py                         255
build/ninja_main.py                             443
core/NINJA_subgraph.py                           58
cpp/NINJA_subgraph.py                           223
data_lang/NINJA_subgraph.py                      66
display/NINJA_subgraph.py                        16
frontend/NINJA_subgraph.py                      175
mycpp/NINJA_subgraph.py                         443
osh/NINJA_subgraph.py                            32
pea/NINJA_subgraph.py                            19
prebuilt/NINJA_subgraph.py                       79
yaks/NINJA_subgraph.py                           93
ysh/NINJA_subgraph.py                            39

3,585 lines in 20 files