[TODO] Support executables with non-unique section names

It appears that most games released prior to 2007-11-05 have at least 1 `._embsec` section, and in some cases, up to 8. Several instances of logic within Jeff rely on unique section names to function, such as [here](https://github.com/rjkiv/jeff/blob/1f9a69993e2b583aea14a61c219fffe6f9a6ebc8/src/util/xpdb.rs#L35). This causes analysis on games with these sections to malfunction.