dbmigrate: python3 fixes

rhodecode/lib/dbmigrate/migrate/versioning/cfgparse.py

@@ -2,7 +2,7 b''
    Configuration parser module.
 """
 
-import configparser
+from configparser import ConfigParser
 
 from rhodecode.lib.dbmigrate.migrate.versioning.config import *
 from rhodecode.lib.dbmigrate.migrate.versioning import pathed

rhodecode/lib/dbmigrate/migrate/versioning/schemadiff.py

@@ -97,7 +97,7 b' class ColDiff(object):'
                 self.diff=True
                 return
 
-    def __bool__(self):
+    def __nonzero__(self):
         return self.diff
 
     __bool__ = __nonzero__
@@ -132,7 +132,7 b' class TableDiff(object):'
         'columns_different',
         )
 
-    def __bool__(self):
+    def __nonzero__(self):
         return bool(
             self.columns_missing_from_A or
             self.columns_missing_from_B or

rhodecode/lib/dbmigrate/migrate/versioning/version.py

@@ -64,6 +64,12 b' class VerNum(object):'
     def __int__(self):
         return int(self.value)
 
+    def __index__(self):
+        return int(self.value)
+
+    def __hash__(self):
+        return hash(self.value)
+
 
 class Collection(pathed.Pathed):
     """A collection of versioning scripts in a repository"""