config: ignore include errors for nonexistent files

mercurial/config.py

@@ -7,7 +7,7
 
 from i18n import _
 import error, util
-import re, os
+import re, os, errno
 
 class sortdict(dict):
     'a simple sorted dictionary'
@@ -103,6 +103,7 class config(object):
                     try:
                         include(inc, remap=remap, sections=sections)
                     except IOError, inst:
+                        if inst.errno != errno.ENOENT:
                         raise error.ParseError(_("cannot include %s (%s)")
                                                % (inc, inst.strerror),
                                                "%s:%s" % (src, line))