- VC++ doesn't seem to like the TArray serializer so I added a workaround

to be able to save the 3dMidtex attachment info.
- Fixed: The TArray serializer needs to be declared as a friend of TArray
  in order to be able to access its fields.
- Since there are no backwards compatibility issues due to savegame version
  bumping I closed all gaps in the level flag set.
- Bumped min. Savegame version and Netgame version for 3dMidtex related
  changes.
- Changed Jump and Crouch DMFlags into 3-way switches:
  0: map default, 1: off, 2: on. Since I needed new bits the rest of
  the DMFlag bit values had to be changed as a result.
- fixed: PTR_SlideTraverse didn't check ML_BLOCKMONSTERS for sliding
  actors without MF3_NOBLOCKMONST.
- Added MAPINFO commands 'checkswitchrange' and 'nocheckswitchrange'
  that can enable or disable switch range checking globally per map.
- Changed ML_3DMIDTEX to force ML_CHECKSWITCHRANGE.
- Added a ML_CHECKSWITCHRANGE flag which allows checking whether the 
  player can actually reach the switch he wants to use.
- Made DActiveButton::EWhere global so that I can use it outside thr
  DActiveButton class.

March 17, 2008 (Changes by Graf Zahl)
- Changed P_LineOpening to pass its result in a struct instead of global
  variables.
- Added Eternity's 3DMIDTEX feature (no Eternity code used though.)
  It should be feature complete with the exception of the ML_BLOCKMONSTERS
  flag handling. That particular part of Eternity's implementation is
  sub-optimal because it hijacks an existing flag and doesn't seem to make
  much sense to me. Maybe I'll implement it as a separate flag later.


SVN r810 (trunk)

src/doomdata.h

@@ -149,9 +149,6 @@ static inline int GET_SPAC (int flags)
 
 #define SPAC_OTHERCROSS	8	// [RH] Not a real activation type. Here for compatibility.
 
-// [RH] Monsters (as well as players) can active the line
-#define ML_MONSTERSCANACTIVATE		0x2000
-#define ML_BLOCK_PLAYERS			0x4000
 
 // [RH] BOOM's ML_PASSUSE flag (conflicts with ML_REPEATSPECIAL)
 #define ML_PASSUSE_BOOM				0x0200
@@ -169,13 +166,17 @@ static inline int GET_SPAC (int flags)
 #define ML_RAILING_STRIFE			0x0200
 #define ML_BLOCK_FLOATERS_STRIFE	0x0400
 
-
+// Extended flags
+#define ML_MONSTERSCANACTIVATE		0x00002000	// [RH] Monsters (as well as players) can active the line
+#define ML_BLOCK_PLAYERS			0x00004000
 #define ML_BLOCKEVERYTHING			0x00008000	// [RH] Line blocks everything
 #define ML_ZONEBOUNDARY				0x00010000
 #define ML_RAILING					0x00020000
 #define ML_BLOCK_FLOATERS			0x00040000
 #define ML_CLIP_MIDTEX				0x00080000	// Automatic for every Strife line
 #define ML_WRAP_MIDTEX				0x00100000
+#define ML_3DMIDTEX					0x00200000
+#define ML_CHECKSWITCHRANGE			0x00400000
 
 // Sector definition, from editing
 typedef struct