1. Fix EDKT417: System hangs to setup build preference when there is no target.txt existing
2. Replace the values of ToolCode of SourceFile with the items defined in spec 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1771 6f19259b-4bc3-4df7-8a09-765794883524
3 files changed