[MERGE #2320 @obastemur] fix legacy build issue - Pch header location
[MERGE #2320 @obastemur] fix legacy build issue - Pch header location

Merge pull request #2320 from obastemur:fix_leg

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