Two changes

Changes for KK to be merged into mainline pylibopenflow
Changed show to return a string.
diff --git a/tools/pylibopenflow/pylib/config.py b/tools/pylibopenflow/pylib/config.py
index b90f630..61c903d 100644
--- a/tools/pylibopenflow/pylib/config.py
+++ b/tools/pylibopenflow/pylib/config.py
@@ -2,28 +2,28 @@
 # of_message specific controls
 
 # Do not include any arrays marked [0]
-IGNORE_ZERO_ARRAYS = 1
+IGNORE_ZERO_ARRAYS = True
 
 # Do not include the ofp_header as a member in any structure
 # This allows messages to be consistently generated as:
 #   explicit header declaration
 #   core member declaration
 #   variable length data
-IGNORE_OFP_HEADER = 1
+IGNORE_OFP_HEADER = True
 
 # Generate object equality functions
-GEN_OBJ_EQUALITY = 1
+GEN_OBJ_EQUALITY = True
 
 # Generate object show functions
-GEN_OBJ_SHOW = 1
+GEN_OBJ_SHOW = True
 
 # Generate lists of enum values
-GEN_ENUM_VALUES_LIST = 0
+GEN_ENUM_VALUES_LIST = False
 
 # Generate dictionary of enum strings to values
-GEN_ENUM_DICTIONARY = 1
+GEN_ENUM_DICTIONARY = True
 
 # Auxilary info:  Stuff written to stdout for additional processing
 # Currently generates a (python) map from a class to a list of
 # the data members; used for documentation
-GEN_AUX_INFO = 1
+GEN_AUX_INFO = True