clean up semantics on slice_indexer a bit

rename typ -> kind for _convert_*_indexer

add kind argument to _maybe_cast_slice_bound

cleaned up _convert_slice_indexer a bit

Author: jreback

pandas/core/generic.py

@@ -1159,11 +1159,11 @@ def _clear_item_cache(self, i=None):
         else:
             self._item_cache.clear()
 
-    def _slice(self, slobj, axis=0, typ=None):
+    def _slice(self, slobj, axis=0, kind=None):
         """
         Construct a slice of this container.
 
-        typ parameter is maintained for compatibility with Series slicing.
+        kind parameter is maintained for compatibility with Series slicing.
 
         """
         axis = self._get_block_manager_axis(axis)