Change Opcodes.ASM4 to Opcodes.ASM5, to work with java8 lambdas.  Also update opensource build to ASM 5.0.1.

I'm not confident this will 100% solve every issue... we may need to update cglib also to use OpCodes.ASM5.  Should do some testing w/ AOP over things with default methods & lambdas.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=64557004
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