use GNU readline for auto completion

[BruceKangCN]

No description provided.

[Hagb]

To use GNU readline licensed under GPL, maybe mcrcon should also be licensed under GPL too.

[Tiiffi]

Hi,

I think this is very good addition but the only problem I have with getline is that it adds dependency which may cause problems on different platforms. I am also trying to keep mcrcon simple and easy to compile with reasonably minimal dependencies.

I think the best solution is to make the getline support optional. Perhaps using makefile option like this: make getline=1

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@Hagb

To use GNU readline licensed under GPL, maybe mcrcon should also be licensed under GPL too.

As fas as I know Zlib license is compatible with GPL so there shouldn't be any problem with that.

[Hagb]

@Tiiffi

As fas as I know Zlib license is compatible with GPL so there shouldn't be any problem with that.

Sorry for my misunderstanding about GPL-compatibility. You are right.
https://www.gnu.org/licenses/gpl-faq.html#IfLibraryIsGPL