Load-time synthesis and patching of kernel module ELF and kexec PE

Both ELF and PE loaders synthesize and patch binaries while loading them. This prevents us from faithfully validating whether loaded binary segments are correct.

Start by locating the ELF and PE loader entry points and tracing where binaries are synthesized or patched during loading. Compare that behavior with the segment-validation path; done means loaded binary segments can be faithfully validated without load-time synthesis or patching in both loaders.

Written by the indexing model from the issue text.