[MERGE #1932 @meg-gupta] Add definitions for EmitIntToLong / EmitUIntToLong in arm64
[MERGE #1932 @meg-gupta] Add definitions for EmitIntToLong / EmitUIntToLong in arm64

Merge pull request #1932 from meg-gupta:fixarmbuild

Fix build break

Microsoft/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore