review request (URGENT): 7052202: JSR 292: Crash in sun.invoke.util.ValueConversions.fillArray

[John Rose]

These are the JDK-side fixes for several crashes in method handle adapters.
  http://cr.openjdk.java.net/~jrose/7052202/webrev.jdk.00/

Summary of changes:
 - correct parameters of some rotate (OP_ROT_ARGS) permutation adapters
 - communicate the rotation convention with the JVM via OP_ROT_ARGS_DOWN_LIMIT_BIAS
 - adjust code in MethodHandleImpl for GWT transformations
 - fix typo in SwitchPoint javadoc
 - fix non-compliant logic in MethodHandleProxies
 - fix invalid private classes in MethodHandlesTest

7052202: JSR 292: Crash in sun.invoke.util.ValueConversions.fillArray
Summary: Fix corner cases involving MethodHandles.permuteArguments with long or double argument lists.

This bug also has a set of JVM-side fixes, which will also be posted for review.  A preview may be found in the mlvm patch repository:
  http://hg.openjdk.java.net/mlvm/mlvm/hotspot/file/tip/meth-rot-7052202.patch

Both change sets are required to fix the bug.  Either change set is safe to apply by itself, and will cause no regression.

Thanks,
-- John