Code-sign (ad-hoc) the executables, so they're allowed to run on arm6…

…4. [kosada/vuo/vuo#17836]

Also build install_name_tool. [kosada/vuo/vuo#17836]

Update to cctools 949.0.1 (latest available). Build for both x86_64 +…

… arm64. [kosada/vuo/vuo#17836]