Merge branch 'ghost-scale-fix' into 'next'

Record Attack ghosts scale fix

This fixes how changes to the player's scale are recorded in Record Attack demos, so ghosts of your demos don't disappear when they attempt to change to scales >= FRACUNIT (if they didn't change scales at all they were unaffected).

Have some gifs for comparison:
* A demo recorded without the fix: https://dl.dropboxusercontent.com/s/tk9x8nptzhw7yb1/srb20106.gif
* A demo recorded with the fix: https://dl.dropboxusercontent.com/s/b4h4iuiwbh0voos/srb20107.gif

See merge request !197

src/g_game.c

@@ -3872,7 +3872,7 @@ void G_GhostAddColor(ghostcolor_t color)
 	ghostext.color = (UINT8)color;
 }
 
-void G_GhostAddScale(UINT16 scale)
+void G_GhostAddScale(fixed_t scale)
 {
 	if (!demorecording || !(demoflags & DF_GHOST))
 		return;

src/g_game.h

@@ -139,7 +139,7 @@ void G_GhostAddSpin(void);
 void G_GhostAddRev(void);
 void G_GhostAddColor(ghostcolor_t color);
 void G_GhostAddFlip(void);
-void G_GhostAddScale(UINT16 scale);
+void G_GhostAddScale(fixed_t scale);
 void G_GhostAddHit(mobj_t *victim);
 void G_WriteGhostTic(mobj_t *ghost);
 void G_ConsGhostTic(void);