gclient: print a warning if a dep would get deleted or moved in the future

scm.py

Index: scm.py
diff --git a/scm.py b/scm.py
index d53b4f4ed75f2cc29476003d7602549735b45626..4703e61b3051fd1a90faaf3aa100b59cb448428d 100644
--- a/scm.py
+++ b/scm.py
@@ -171,7 +171,7 @@ class GIT(object):
 
   @staticmethod
   def IsGitSvn(cwd):
-    """Returns true if this repo looks like it's using git-svn."""
+    """Returns True if this repo looks like it's using git-svn."""
     # If you have any "svn-remote.*" config keys, we think you're using svn.
     try:
       GIT.Capture(['config', '--local', '--get-regexp', r'^svn-remote\.'],