This small ELF parser contains just the bare minimum functions so we
can load ELF sections without the use of any external library.  This
module also doesn't allocate dynamic memory.

Signed-off-by: Giuliano Belinassi <[email protected]>

Livepatch load works but it doesn't modify the addresses because there
is nothing to interpret the insn_queue.

Signed-off-by: Giuliano Belinassi <[email protected]>

This commit adds a insnq_interp in libpulp side as a way to trigger a
livepatch without the `ulp` tool.  This is useful for debugging libpulp
as for example to use it in valgrind, since we can't run it under
addrsan.

Signed-off-by: Giuliano Belinassi <[email protected]>

The gdb interface should be used for debugging libpulp, so applications
may not want this exposed.

To enable it, build with
```
configure --enable-gdb-interface
```

Signed-off-by: Giuliano Belinassi <[email protected]>