llvm: resolve all relative paths when creating DIFiles

This will make stack traces and debugging experience more consistent
in the sense that the presence of source lines in stack traces will
not be dependent on the current working directory of the running process.
bda5180b2cJakub Konka committed on 12/9/2022, 1:16:44 PMparentd88eb75
1 file changedLine totals unavailable