Fix and improve tail call. Fix flagsFor: Allow more than one input. Inputs and temporaries may only be registers. Remove redundant moves from emitCode, these are emitted by visitInvokeArguments in TailcallNode. Skip over empty slot for two-slot values in frame state.

#!/bin/bash
pushd make
LANG=C ARCH_DATA_MODEL=64 HOTSPOT_BUILD_JOBS=16 make clean
popd