#82 v/hslider may modify icoming numbers

[Frank Barknecht]

Sliders should pass incoming numbers unchanged, but
they don't.

The slider objects vsl and hsl may modify incoming
integer numbers. Sending for example the integer "2" to
a slider with a range of 0-7 will make it output
2.00024 instead of 2. Attached example illustrates this.

[Frank Barknecht]

patch with a modifying slider