Reduce number of InputStream constructors

[bernardnormier]

In C#, InputStream has 26 public constructors, which very much over to top. We need to reduce this number. It's also like some (like 1 or 2) constructors should be internal, not public.

This InputStream constructor overload is not limited to C#.

[InsertCreativityHere]

Java also has 26 public constructors. We should also reduce this number.
Since this is the exact same number as C#, the constructors are probably the same.

[bernardnormier]

Fixed.