Add a HeaderOptions struct that can be used to configure commonly-used load commands LC_ID_DYLIB, LC_LOAD_DYLIB, and LC_RPATH when setupDylib creates a mach-o header.
Add a HeaderOptions struct that can be used to configure commonly-used load commands LC_ID_DYLIB, LC_LOAD_DYLIB, and LC_RPATH when setupDylib creates a mach-o header.