Reducing public surface of CommandLine.IParser

[gsscoder]

My current level of skill / knowledge disagree that this interface (and main implementation CommandLine.Parser) exposes so much overloads.

I'm thinking to reduce with this philosophy:

• Prefer constructor (both settings instance / lambda config) to specify preferences.
• Provide flexible alternatives over redundancy.

Few examples:

You know that if you set an TextWriter for help output in settings, you can override the value with this overload?
bool ParseArguments(string[] args, object options, TextWriter helpWriter)

I'm sorry but mr. overload, I think I'm gonna kill you! :D

And all ParseArgumentStrict(...) can be reduced to:

bool ParseArgumentsStrict(string[] args, object options, Action onFail = null);

I'm quite to near to next RC0, so opinions are welcome. Support me or try to make me change idea...

[gsscoder]

Implemented in 1.9.5.0 rc0.