Added fix to handle a problem in python 1.5.2 where time.tzname is

not defined on certain platforms (linux libc5).

lib/python/DateTime/DateTime.py

@@ -84,15 +84,16 @@
 ##############################################################################
 """Encapsulation of date/time values"""
 
-__version__='$Revision: 1.35 $'[11:-2]
+__version__='$Revision: 1.36 $'[11:-2]
 
 
 import sys, os, math, regex, DateTimeZone
 from string import strip,split,upper,lower,atoi,atof,find,join
 from time import time, gmtime, localtime, asctime
-from time import timezone, tzname, strftime, mktime
+from time import timezone, strftime, mktime
 from types import InstanceType,IntType,FloatType,StringType
-
+try: from time import tzname
+except: tzname=('UNKNOWN','UNKNOWN')
 
 
 
@@ -254,22 +255,6 @@ class _cache:
            'ret':'GMT+4'
            }
 
-
-##     gt, lt=gmtime(time()), localtime(time())
-##     if gt[2]==lt[2] and gt[3]==lt[3]:
-##         zn='GMT'
-##     elif gt[2] >= lt[2] and gt
-##     elif gt[2]==lt[2] and gt[3] > lt[3]:
-##         zn='GMT-%d' % n
-##     elif gt[2]==lt[2]
-
-##     # Attempt to add the local machine tz info to the cache.
-##     n=timezone / 3600.0
-##     # Only handle whole-hour offsets.
-##     if (n - int(n)) == 0:
-##         zn=tzname
-##         gn='GMTint(n)
-
     def __init__(self):
         self._db=DateTimeZone._data
         self._d,self._zidx={},self._zmap.keys()