Header file tweaking; mainly for speed

src/CMakeLists.txt

@@ -95,7 +95,6 @@ set(common_SRCS
 	content_inventory.cpp
 	content_nodemeta.cpp
 	content_craft.cpp
-	content_mapblock.cpp
 	content_mapnode.cpp
 	auth.cpp
 	collision.cpp
@@ -138,6 +137,7 @@ endif()
 # Client sources
 set(minetest_SRCS
 	${common_SRCS}
+	content_mapblock.cpp
 	content_cao.cpp
 	mapblock_mesh.cpp
 	farmesh.cpp