Rename constant_unroll --> constant_decompose

afl_transforms/tools/SConscript

afl_transforms/tools/constant_decompose/SConscript

afl_transforms/tools/constant_decompose/SConstruct

...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/constant_decompose/test/Makefile

afl_transforms/tools/constant_decompose/test/run_tests.sh

afl_transforms/tools/constant_decompose/test/test.c

afl_transforms/tools/constant_decompose/test/test0.c

afl_transforms/tools/constant_decompose/test/test2.c

afl_transforms/tools/constant_decompose/test/test4.c

afl_transforms/tools/constant_unroll/test/Makefile