[O] http link character mistranslated

[mirko]

Hi,

(Org-mode version 8.2.5h (release_8.2.5h-651-g897b60)

I have an https address with an equal sign `=':
   https://forums.virtualbox.org/viewforum.php?f=3

When I try to access the link, the `=' is translated as `%D':
   https://forums.virtualbox.org/viewforum.php?f%3D3

I looked in org-open-at-point, and the translation appears somewhere in
org-element-property.  I did not look deeper.

I tested this in an Emacs session with only org mode loaded (no user init)

Thanks,

Mirko