evil-scroll-start-column doesn't take apparent column into account

[anpandey]

This is especially noticeable if hscroll-margin is a small number and we're in a buffer that uses lots of text in the line-prefix property, which is common in e.g. org-indent-mode.

Steps to reproduce:

• Set the hscroll-margin to something small, e.g. (setq hscroll-margin 3)
• Create a new fundamental-mode buffer, and insert some text on a line
• Evaluate this code to insert a line-prefix property for the current line:

  (put-text-property
  (line-beginning-position)
  (line-end-position)
  'line-prefix
  (make-string 20 ?\s))

• Move towards the center of the text, and invoke evil-scroll-start-column, or alternatively z s

I'd expect the buffer to scroll so that the cursor is only 3 columns away from the left margin of the window. Instead, it is 20 + 3 columns away.