Change $CURRENT_ARCH settings in xcode project file to hardcoded "x86_64" - used for finding the llvm build directory.  Newer Xcodes do not define CURRENT_ARCH.
Change $CURRENT_ARCH settings in xcode project file to hardcoded
"x86_64" - used for finding the llvm build directory.  Newer
Xcodes do not define CURRENT_ARCH.


git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@346443 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb