removed cwd "./" (refer to Bugzilla 14399).
* File join has been disabled in this release, refer to Bugzilla 16929.
+Severity : normal
+Frequency : rare
+Bugzilla : 18902
+Descriptoin: allow kill process which wait statahead result
+Details : for some reasons 'ls' can stick in waiting result from statahead,
+ in this case need way for kill this process.
+
Severity : enhancement
Bugzilla : 18798
Description: Add state history info file, enhance import info file