add test for issue 322.

no .out file because issue is still live.

tests/test-issue322

@@ -0,0 +1,20 b''
+#!/bin/sh
+# http://www.selenic.com/mercurial/bts/issue322
+
+hg init a
+cd a       
+echo a > a 
+hg commit -Ama 
+rm a       
+mkdir a    
+echo a > a/a
+
+echo % should fail - will corrupt dirstate
+hg add a/a
+hg commit -mb
+
+echo % should fail - manifest is corrupt
+hg verify
+cd ..      
+
+hg --debug --traceback clone a b