dash_R_cleanup(): Clear filecmp._cache. This accounts for
different results across -R runs (at least on Windows) of
test_filecmp.
diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index 47a013a..ca4a3b5 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -639,7 +639,7 @@
import gc, copy_reg
import _strptime, linecache, warnings, dircache
import urlparse, urllib, urllib2, mimetypes, doctest
- import struct
+ import struct, filecmp
from distutils.dir_util import _path_created
# Restore some original values.
@@ -660,6 +660,7 @@
linecache.clearcache()
mimetypes._default_mime_types()
struct._cache.clear()
+ filecmp._cache.clear()
doctest.master = None
# Collect cyclic trash.