Add direction parameter to statbars in HUD API

Fix health bar overlap when a larger texture is used

doc/lua_api.txt

@@ -407,6 +407,8 @@ The position field is used for all element types.
 To account for differing resolutions, the position coordinates are the percentage of the screen,
 ranging in value from 0 to 1.
 The name field is not yet used, but should contain a description of what the HUD element represents.
+The direction field is the direction in which something is drawn.
+0 draws from left to right, 1 draws from right to left, 2 draws from top to bottom, and 3 draws from bottom to top.
 Below are the specific uses for fields in each type; fields not listed for that type are ignored.
 
 Note: Future revisions to the HUD API may be incompatible; the HUD API is still in the experimental stages.
@@ -428,15 +430,12 @@ Note: Future revisions to the HUD API may be incompatible; the HUD API is still
     - text: The name of the texture that is used.
     - number: The number of half-textures that are displayed.
               If odd, will end with a vertically center-split texture.
+    - direction
 - inventory
     - text: The name of the inventory list to be displayed.
     - number: Number of items in the inventory to be displayed.
     - item: Position of item that is selected.
-    - direction: Direction in which the inventory list is drawn.
-                 0 draws from left to right,
-                 1 draws from right to left,
-                 2 draws from top to bottom, and
-                 3 draws from bottom to top.
+    - direction
 
 Representations of simple things
 --------------------------------
@@ -1856,6 +1855,6 @@ HUD Definition (hud_add, hud_get)
     number = 2,
     item = 3,
     ^ Selected item in inventory.  0 for no item selected.
-    dir = 0,
+    direction = 0,
     ^ Direction: 0: left-right, 1: right-left, 2: top-bottom, 3: bottom-top
 }