message: [lldb] [lit] Pass --mode=compile to fix compiler-full-path.test
  Pass '--mode=compile' to fix compiler-full-path.test failure on NetBSD
  buildbot (apparently due to lack of 'link' executable).
  Fixes r360355.  Acked by Pavel Labath.
diff: -RUN: %build -n --verbose --arch=64 --compiler=/path/to/my/clang -o foo \
  -RUN: foobar.c | FileCheck %s --check-prefix=CHECK-CLANG
  -RUN: %build -n --verbose --arch=64 --compiler=/path/to/my/x64/cl.exe -o foo \
  -RUN: foobar.c | FileCheck %s --check-prefix=CHECK-MSVC
  +RUN: %build -n --mode=compile --verbose --arch=64 --compiler=/path/to/my/clang \
  +RUN: -o foo foobar.c | FileCheck %s --check-prefix=CHECK-CLANG
  +RUN: %build -n --mode=compile --verbose --arch=64 \
  +RUN: --compiler=/path/to/my/x64/cl.exe -o foo foobar.c | \
  +RUN: FileCheck %s --check-prefix=CHECK-MSVC
  CHECK-CLANG: Command Line: /path/to/my/clang
  CHECK-SAME: -o
  