updates for refactoring

.gitignore

afl_transforms/SConstruct

afl_transforms/tools/constant_decompose/SConscript

...ransforms/tools/constant_decompose/constant_decompose.cpp

...ransforms/tools/constant_decompose/constant_decompose.hpp

...ms/tools/constant_decompose/constant_decompose_driver.cpp

afl_transforms/tools/zax/SConscript

afl_transforms/tools/zax/critical_edge_breaker.cpp

afl_transforms/tools/zax/critical_edge_breaker.hpp

afl_transforms/tools/zax/zax.cpp

afl_transforms/tools/zax/zax.hpp

afl_transforms/tools/zax/zax_driver.cpp

afl_transforms/tools/zax/zuntracer.cpp

afl_transforms/tools/zax/zuntracer.hpp