Port finding part possible rewrite

[Zangune]

Actually arz searches the preferences.ini file and scans that file to find eMule ports.
A different approach can be to search for listening ports in Windows, in example this command

NETSTAT -A

can be useful, but eMule has to be open.

[Zangune]

Actually related to What will be changed in ARZ in the future.

[Zangune]

This should be definitely the best solution, according to the case of commando67 that I faced on IRC this evening: commando67 joined #eMule-Italian, matry's AnalisiRete (a .NET arz equivalent) failed to find useful information, I suggested him to launch arz, the program gave me a fake result because of commando67 unzipped eMule in a folder but he had (or has) another eMule version installed, I spent a lot of time to undestand that I helped him to forward two different ports, when we changed ports all worked as intended, of course.

[Zangune]

Related to issue Missing registry key HKCU\Software\eMule causes ARZ to fail because if arz won't search the preferences.ini then it won't care about the registry key, too.

[Zangune]

NETSTAT/ANO

shows output immediately.

A : display All connections and listening ports.
N : display addresses and port numbers in Numerical form.
O : display the Owning process ID associated with each
    connection.

removing the N option is slower, but probably unavoidable.

[Zangune]

There was a typo in the title of this thread, but SourceForge didn't support the title change in the past. Just now, I discovered it can be changed. Better late than never.