[LinkerScript] Enforce uniqueness of output object files...
[LinkerScript] Enforce uniqueness of output object files...

... in order to avoid conflicts when tests are run in parallel.
This is an attempt to fix PR24591.


git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@246153 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld