Index: tools/mkfat.py
===================================================================
--- tools/mkfat.py	(revision 9035c5a039d04f61d696becf12fa6c74cbabe5ae)
+++ tools/mkfat.py	(revision 24edc18b7b665e2445588b1a92e24bd8701d7174)
@@ -37,5 +37,5 @@
 import array
 
-exclude_names = set(['.svn'])
+exclude_names = set(['.svn', '.bzr'])
 
 def align_up(size, alignment):
Index: tools/mktmpfs.py
===================================================================
--- tools/mktmpfs.py	(revision 9035c5a039d04f61d696becf12fa6c74cbabe5ae)
+++ tools/mktmpfs.py	(revision 24edc18b7b665e2445588b1a92e24bd8701d7174)
@@ -35,5 +35,5 @@
 import xstruct
 
-exclude_names = set(['.svn'])
+exclude_names = set(['.svn', '.bzr'])
 
 HEADER = """little: