RFR 8029852 and 8029725: lambda instantiates enclosing local class

[Robert Field]

Please review compiler (javac) fix for:

https://bugs.openjdk.java.net/browse/JDK-8029852
https://bugs.openjdk.java.net/browse/JDK-8029725

Webrev:

http://cr.openjdk.java.net/~rfield/8029852and8029725/ 
<http://cr.openjdk.java.net/%7Erfield/8029852and8029725/>

8029852: Bad code generated (VerifyError) when lambda instantiates 
enclosing local class and has captured variables. Add special capture 
handling.
8029725: Lambda reference to containing local class causes javac 
infinite recursion. Add tracking of processed classes to prevent looping.

Thanks,
Robert