patches: apply x offset to M_GD{HIGH,LOW} (shadow1013)
patches: apply x offset to M_GD{HIGH,LOW} (shadow1013)

Freedoom's menu font is wider than Doom's, but vanilla-like engines such
as Chocolate Doom hard-code the location of the indicator to the right
of the graphic detail menu option, so it ends up overdrawn.

Apply a patch x-offset of -15, as suggested by shadow1013 in
<http://www.doomworld.com/vb/freedoom/57738-option-menu-bug/>.

[RjY: note: I am slightly concerned that it is just papering over the
cracks of an engine deficiency, and will cause problems for any engine
that tries to be more intelligent about setting out its menus.]

CWolfRU/freedoom,CWolfRU/freedoom,jmtd/freedoom,jmtd/freedoom,jmtd/freedoom