fixing computation time parsing, more utf8 stuff

pykat/finesse.py

@@ -1541,12 +1541,14 @@ class kat(object):
 			
             (stdout, stderr) = p.communicate()
 
-            r.stdout = stdout #.decode('unicode_escape')
-            r.stderr = stderr #.decode('unicode_escape')
+            r.stdout = stdout.decode('utf-8')
+            r.stderr = stderr.decode('utf-8')
             
-            for line in r.stdout[::-1]:
-                if line.lstrip().startswith('computation time:'):
+            k = r.stdout.rfind('computation time:')
+            
+            if k > 0:
                 try:
+                    line = r.stdout[k:]
                     r.runtime = float(line.split(":")[1].replace("s",""))
                 except:
                     r.runtime = 0.0