Commands should expand the wildcards on Windows, the cmd prompt doesn't.
Because of that sancov was not finding the needed file.
To deal with this, we use ls and xargs from gnu win utils.
Differential Revision: https://reviews.llvm.org/D29374
llvm-svn: 293825
This changes is necessary on Windows, where libraries doesn't include the prefix
"lib".
Differential Revision: https://reviews.llvm.org/D28710
llvm-svn: 292742