Set of changes to build mineTest using Visual Studio 11.0. These affect

the following:
1. String concatenation in guiMainMenu.cpp - it is required for all
individual strings to be of the same type <unicode/non-unicode>; adding
explicit L qualifier before the other strings.
2. Correcting type of BlockMakeData to struct in place of class forward
declarations. This information is used for name decoration by Visual
Studio, leading to linker errors in case of mismatches.
3. Windows headers define max as a macro somewhere, leading to a compile
time error in profiler.h; using () around function to prevent macro match
from occurring.

src/guiMainMenu.cpp

@@ -43,6 +43,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "subgame.h"
 
 #define ARRAYLEN(x) (sizeof(x) / sizeof((x)[0]))
+#define LSTRING(x) LSTRING_(x)
+#define LSTRING_(x) L##x
 
 const wchar_t *contrib_core_strs[] = {
 	L"Perttu Ahola (celeron55) <celeron55@gmail.com>",
@@ -760,7 +762,7 @@ void GUIMainMenu::regenerateGui(v2u32 screensize)
 			core::rect<s32> rect(0, 0, 130, 70);
 			rect += m_topleft_client + v2s32(35, 160);
 			Environment->addStaticText(
-				L"Minetest " VERSION_STRING "\nhttp://minetest.net/",
+				L"Minetest " LSTRING(VERSION_STRING) L"\nhttp://minetest.net/",
 				 rect, false, true, this, -1);
 		}
 		{

src/map.h

@@ -50,7 +50,7 @@ class NodeMetadata;
 class IGameDef;
 class IRollbackReportSink;
 class EmergeManager;
-class BlockMakeData;
+struct BlockMakeData;
 
 
 /*

src/mapgen.h

@@ -45,7 +45,7 @@ class MapBlock;
 class ManualMapVoxelManipulator;
 class VoxelManipulator;
 class INodeDefManager;
-class BlockMakeData;
+struct BlockMakeData;
 class VoxelArea;
 
 struct MapgenParams {

src/profiler.h

@@ -73,7 +73,7 @@ class Profiler
 			else{
 				/* No add shall have been used */
 				assert(n->second != -2);
-				n->second = std::max(n->second, 0) + 1;
+				n->second = (std::max)(n->second, 0) + 1;
 			}
 		}
 		{