Add lift to rxscala
Add Operator conversion, tail and update liftExample2
Update CompletenessTest
OperatorTakeUntil
OperatorTakeLast
Fixes to the operators.
Operator Window and other changes
Update the signature of lift
Use NotificationLite
Update 'contains' signature to 'contains(Object)'
Modified BufferUntilSubscriber to onError for any subscriber but the first
Operator Delay rebase & fixes
Merge pull request #1124 from zsxwing/scala-lift

Add lift to rxscala
Merge pull request #1134 from zsxwing/take-last

OperatorTakeLast
Merge pull request #1135 from zsxwing/take-until

OperatorTakeUntil
Merge pull request #1137 from akarnokd/OperatorFixes430

Fixes to the operators.
Merge pull request #1138 from akarnokd/OperatorWindow430

Operator Window and other changes
Merge pull request #1142 from zsxwing/contains

Update 'contains' signature to 'contains(Object)'
Merge branch 'OperatorDelay505' of github.com:akarnokd/RxJava into merge-delay

Conflicts:
	rxjava-core/src/main/java/rx/Observable.java
Merge pull request #1148 from benjchristensen/merge-delay

Manual Merge of Delay PR