add support for double precision and 64bit serialization (and compatibility between all versions)

fix some issue in serialization of nested array data
add some tesing files

CMakeLists.txt

@@ -9,6 +9,13 @@ IF (NOT CMAKE_BUILD_TYPE)
 ENDIF (NOT CMAKE_BUILD_TYPE) 
 
 
+OPTION(USE_DOUBLE_PRECISION "Use double precision"	OFF)
+
+IF (USE_DOUBLE_PRECISION)
+ADD_DEFINITIONS( -DBT_USE_DOUBLE_PRECISION)
+ENDIF (USE_DOUBLE_PRECISION)
+
+
 
 IF (WIN32)
 OPTION(USE_GLUT "Use Glut"	OFF)
@@ -63,6 +70,7 @@ IF (USE_GLUT)
 	IF (MSVC)
 	MESSAGE ("GLUT NOT FOUND, trying to use Bullet/Glut/glut32.lib for MSVC")
 	SET(GLUT_glut_LIBRARY ${BULLET_PHYSICS_SOURCE_DIR}/Glut/glut32.lib)
+	#SET(GLUT_glut_LIBRARY ${BULLET_PHYSICS_SOURCE_DIR}/Glut/glut64.lib)
 	ENDIF (MSVC)
 	ENDIF (GLUT_FOUND)