Use the --non-recursive flag when committing.

gcl.py

Index: gcl.py
diff --git a/gcl.py b/gcl.py
index 87417a1ed9203ab10cef407c02de0a3e9eec6213..f2f976c2aace640781dcb94adcf0847c11311301 100755
--- a/gcl.py
+++ b/gcl.py
@@ -879,7 +879,7 @@ def Commit(change_info, args):
            " the commit. May the --force be with you.")
     return
 
-  commit_cmd = ["svn", "commit"]
+  commit_cmd = ["svn", "commit", "--non-recursive"]
   filename = ''
   if change_info.issue:
     # Get the latest description from Rietveld.