build-system: replace toolchain files by detect

CMakeLists.txt

arch/arm/CMakeLists.txt

arch/i386/CMakeLists.txt

arch/i386/idt.cc

arch/patmos/CMakeLists.txt

arch/posix/CMakeLists.txt

config/model.py

generator/attributor/CMakeLists.txt

generator/extractor/CMakeLists.txt

generator/stats_binary.py

static_analysis/CMakeLists.txt

toolchain/ARM.cmake

toolchain/app.cmake

toolchain/detect

toolchain/host.cmake

toolchain/i386.cmake

toolchain/llvm-link.py

toolchain/patmos.cmake

toolchain/posix.cmake