Bug#1022586 kill the homescreen app when memory low

[self test   ] kill and restore ok
Merge pull request #20397 from jimporter/email-as-user-agent

Bug 880670 - [email/activesync] some ActiveSync implementations blacklis...
Merge branch 'v1.3' into v1.3t
Merge pull request #20667 from prcxuying/bug1022586-v1.3t

Bug#1022586 kill the homescreen app when memory low