clang/test/Coverage/html-diagnostics.c: Use find(1) to avoid globbing.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@221263 91177308-0d34-0410-b5e6-96231b3b80d8
clang/test/VFS/umbrella-mismatch.m: Let it work on win32 to avoid backslashes in yaml.

FIXME: Is it intentional? s;OUT_DIR;%/S/Inputs;

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@221264 91177308-0d34-0410-b5e6-96231b3b80d8