New Feature: static fortifications can now be built by mercs (by Flugente)

- if the terrain allows it, an empty sandbag (item 1540) can be filled to a full sandbag (item 1541). You need to have a shovel (item 1015) in your second hand. You will notice the new hammer cursor
- by using a full sandbag, you can build a sandbag barrier
- by using a concertina stack, you can build a concertina wire barrier
- this only works if the current map has sandbags/concertina wire in its tileset
- with a shovel in your hand, you can remove a sandbag barrier
- changed the size of shovel so it can actually be put in inventories. It was also necessary to remove its ability to be used as a melee weapon.
- for further info, see this thread: http://www.bears-pit.com/board/ubbthreads.php/topics/305822.html#Post305822
o Fidel will have a shovel and a few sandbags in his kit #3 to test the feature.

- new code: added a new flagmask variable to items. This one is separately from the attachments index, and can be used to determine item properties without adding up to 32 BOOLEAN varaibles


git-svn-id: https://ja2svn.mooo.com/source/ja2_v1.13_data@1455 4f8fa57e-7814-0410-bad4-adc449f26b7c

INIEditorAPBPConstants.xml

@@ -780,6 +780,13 @@ Represents the AP cost to reload a single round of ammunition.</Description_ENG>
           <Description_RUS>Значение меткости по умолчанию для расчета требуемых АР в описании оружия.</Description_RUS>
           <Description_POL></Description_POL>
 		  <Description_CHI>枪械信息栏内计算 AP 消耗的默认值，以一个技能值为基准。（大概是技能高低影响 AP 消耗？）</Description_CHI>
+        </Property>
+		<Property name="AP_FORTIFICATION" datatype="numeric" minvalue="0" maxvalue="100" defaultvalue="80" interval="1">
+          <Description_ENG>The APs needed build a fortification structure.</Description_ENG>
+          <Description_GER></Description_GER>
+          <Description_RUS></Description_RUS>
+          <Description_POL></Description_POL>
+		  <Description_CHI></Description_CHI>
         </Property>
       </Properties>
     </Section>