[8u40] Request for approval: 8066746, 8057020

[Vladimir Ivanov]

Please, approve backport of the following fixes into 8u40:

8066746: "MHs.explicitCastArguments does incorrect type checks for 
VarargsCollector"
https://bugs.openjdk.java.net/browse/JDK-8066746
http://hg.openjdk.java.net/jdk9/dev/jdk/rev/cb475099ceac
http://mail.openjdk.java.net/pipermail/core-libs-dev/2014-December/030210.html

8057020: "LambdaForm caches should support eviction"
https://bugs.openjdk.java.net/browse/JDK-8057020
http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/3e6549434acb
http://mail.openjdk.java.net/pipermail/core-libs-dev/2014-December/029961.html

Both fixes apply cleanly.

Thanks!

Best regards,
Vladimir Ivanov