Merge pull request #238 from jacobchen/next

[bug fixs] TDIS-6380
Merge pull request #239 from jacobchen/next

[bug fixs] TDIS-5618, Changed to use define getter to protect the batter...
bugfix for RC7
return string for status
throw correct error ID in systeminfo
[Bug fixs] TDIS-6116, TDIS-6117, trigger one time of sensor event when application call add event listener.