Open Radar

 
Summary:
When building with XCBuild after a fresh clean, I got some build failures where XCBuild was trying to ditto files using their path name prefixed with `./`. This resulted in a failure since the file didn't exist. Building again got past this failure.

Steps to Reproduce:
1. Remove the build directory for a project
2. Build

Expected Results:
The build succeeds

Actual Results:
The build failed immediately with this error:

```
ditto: /Users/ksmiley/dev/re-lyft-ng/build/Intermediates.noindex/Lyft.build/Debug-iphonesimulator/Models.build/Objects-normal/x86_64/./Place.dia: No such file or directory
note: /Users/ksmiley/dev/re-lyft-ng/build/Intermediates.noindex/Lyft.build/Debug-iphonesimulator/Models.build/Objects-normal/x86_64/./Place.dia: No such file or directoryCommand Ditto failed with a nonzero exit code
```

As you can see, it was looking for `x86_64/./Place.dia`. I confirmed that at the time `x86_64/Place.dia` did exist.

Version:
Version 9.0 (9A235)

Notes:
- Building again got past this error, but it failed on a few more targets with the same error
- Attached is the log