[v9_10] python 3 compatibility

4591.	[port]		Addressed some python 3 compatibility issues.
			Thanks to Ville Skytta. [RT #44955] [RT #44956]

(cherry picked from commit 6d19d975c6)

bin/python/isc/coverage.py.in

@@ -81,7 +81,7 @@ def parse_time(s):
         pass
 
     # try to parse as a number with a suffix indicating unit of time
-    r = re.compile('([0-9][0-9]*)\s*([A-Za-z]*)')
+    r = re.compile(r'([0-9][0-9]*)\s*([A-Za-z]*)')
     m = r.match(s)
     if not m:
         raise ValueError("Cannot parse %s" % s)