lastchange: skip over git-svn "rebuilding..." lines

build/util/lastchange.py

Index: build/util/lastchange.py
diff --git a/build/util/lastchange.py b/build/util/lastchange.py
index 15c0a1fb4fe3665e5b665cd288f459845647bf88..3718c54bda862fac41a0d1a530b9e11b373d5684 100755
--- a/build/util/lastchange.py
+++ b/build/util/lastchange.py
@@ -63,7 +63,9 @@ def FetchSVNRevision(command, directory):
   attrs = {}
   for line in proc.stdout:
     line = line.strip()
-    if not line:
+    # git-svn can print out extra "Rebuilding ..." lines, which we don't
+    # care about and want to skip over.
+    if not line or ': ' not in line:
       continue
     key, val = line.split(': ', 1)
     attrs[key] = val