The following APIs have been implemented inside `libbcc`, which
programatically replicate the previous usage of `binutils` tools like
`objdump` and `elfdump`.

- bcc_elf_foreach_usdt: finds all USDT probes inside a given binary
- bcc_elf_loadadddr: find the load address for a shared object
- bcc_elf_foreach_sym: lists all symbols in an ELF binary or SO
- bcc_elf_shared_obj: returns whether a given path is an ELF shared
  object, a binary, or neither