Mms: Add feature for delay send SMS, user can cancel send SMS in speical duration by click the sending SMS.
     Patch Set 2: Add screen snapshot.
                  http://i49.tinypic.com/148qvl.jpg, http://i49.tinypic.com/2zgub5w.jpg, http://i48.tinypic.com/4q0ll3.png
     Patch Set 3: Merge Andrew Jiang's suggestion for English.
     Patch Set 4: Reformat code.

Change-Id: I03e4cb54304580f154ec3b1c476f74c7155bb2da

Conflicts:
	res/values-zh-rCN/arrays.xml
	res/values-zh-rCN/strings.xml
	res/values/arrays.xml
	res/values/strings.xml
	src/com/android/mms/ui/ComposeMessageActivity.java
	src/com/android/mms/ui/MessageListItem.java
	src/com/android/mms/ui/MessagingPreferenceActivity.java