Move alternateImpl detection into MethodInfo constructor.
Add missing stack.pop() in deleteFileImpl
Add some missing java/security classes
Don't catch exceptions in invoke*
Add missing stack.pop() in loadAndCreateImmutableImageDataFromCache0
Merge pull request #415 from marco-c/add_missing_stack_pop

Add missing stack.pop() in deleteFileImpl
Merge pull request #419 from marco-c/add_missing_stack_pop_in_loadAndCreateImmutableImageDataFromCache0

Add missing stack.pop() in loadAndCreateImmutableImageDataFromCache0
Merge pull request #416 from marco-c/add_missing_security_classes

Add some missing java/security classes
Add missing stack.pop() in Isolate.setPriority0
Merge pull request #421 from marco-c/add_missing_stack_pop_in_setPriority0

Add missing stack.pop() in Isolate.setPriority0
Merge pull request #418 from marco-c/dont_catch_in_vm_execute

Don't catch exceptions in invoke*
Remove additional "if (!method.key)" check.
Merge pull request #414 from mcav/alternate-2

Move alternateImpl detection into MethodInfo constructor.