exit gracefully and call destructor of the current active example

fflush after printf
implemented stepForward and Shutdown for the SharedMemory client/server

src/Bullet3Common/b3Logging.cpp

@@ -29,7 +29,8 @@ void b3PrintfFuncDefault(const char* msg)
 	OutputDebugStringA(msg);
 #endif
 	printf("%s",msg);
-
+    //is this portable?
+    fflush(stdout);
 }
 
 void b3WarningMessageFuncDefault(const char* msg)
@@ -38,7 +39,8 @@ void b3WarningMessageFuncDefault(const char* msg)
 	OutputDebugStringA(msg);
 #endif
 	printf("%s",msg);
-
+    //is this portable?
+    fflush(stdout);
 
 }
 
@@ -49,6 +51,9 @@ void b3ErrorMessageFuncDefault(const char* msg)
 	OutputDebugStringA(msg);
 #endif
 	printf("%s",msg);
+
+    //is this portable?
+    fflush(stdout);
     
 }