During the generic x86-64 support refactor in ecf6466f01c52 the implementation of MachO_arm64_GOTAndStubsBuilder::isGOTEdgeToFix was altered to only return true for external symbols. This behavior is incorrect: GOT entries may be required for defined symbols (e.g. in the large code model). This patch fixes the bug and adds a test case for it (renaming an old test case to avoid any ambiguity).