Corrected timer seed

Prevoius one caused the clock being slow.
If timer is se to "2", the diagram looks like this:
value:      __|_____|_____|_____|__
              0     1     2     3
interrupt:  __+-+_________+-+______

3 intervals are between interrupts. So interrupts happen
(OCR1A+1) more rare than clock cicles.
Frequency is  (OCR1A+1) times lower than quarz clocking

arduino_clock.ino

@@ -2,7 +2,7 @@
 #include <SerialLCD.h>
 #include <SoftwareSerial.h>	//this is a must
 
-#define TIMER_SEED 15633
+#define TIMER_SEED 15632
 
 SerialLCD slcd(11, 12);		//this is a must, assign soft serial pins
 byte seconds = 0;

clock_scale.py

@@ -42,7 +42,7 @@ def better_result(cur_skew,
 
 for conter_seed in xrange(1,timer_max_value):
     for p in prescalers:
-        postscaler = freq / p / (conter_seed)
+        postscaler = freq / p / (conter_seed + 1)
         if postscaler > max_postscaler: continue
         skew = postscaler - int(postscaler)
         if better_result(skew,