Iname duplication options with dependencies

This merge request has a function:

1. duplicate_inames_with_deps: Does the duplication for an (iname, insn) such that the whole forward and reverse dependencies group of instructions are duplicated along with it.
2. is_isomorphic_duplication: Checks for unnecessary duplication options.
3. needs_duplication_with_deps: Checking function that determines whether the duplication options needs to go with the complete duplication of the instructions, along with its dependencies.
4. Also added a test function exercising the same. It is currently the best function that could explain the dynamics and necessities of the functions.