Convert to Python 3: clarify print() syntax

Not sure why but 2to3 suggested to enclose the % expression into
parentheses before passing it to print(); I did about the same thing
manually but a bit more readable.

sznqalibs/bottleneck.py

@@ -36,10 +36,11 @@ class FrameState(object):
 
     def debug(self):
         if self.DEBUG_MODE:
-            print("%4d; %4d; %5s; %0.3f; %0.3f; %5s; %5s"
-                  % (self.load, self.MAX_LOAD, self.load_ok,
-                     self.pos, self.SIZE, self.time_ok,
-                     self.allows))
+            msg = ("%4d; %4d; %5s; %0.3f; %0.3f; %5s; %5s"
+                   % (self.load, self.MAX_LOAD, self.load_ok,
+                      self.pos, self.SIZE, self.time_ok,
+                      self.allows))
+            print(msg)
 
     def is_closed(self):
         return not self.is_open()