It's possible currently that the sanitizer runtimes when testing grab
the path to the symbolizer through *SAN_SYMBOLIZER_PATH=...
This can be polluted by things like Android's setup script. This patch
forces external_symbolizer_path=$new_build_out_dir/llvm-symbolizer when
%env_tool_options is used.
Same principle with Android, except that we need to replace the path to
the new symbolizer with the path to the new symbolizer on the device.
Previously committed, fixed-forward, then reverted to bring us back to
stable before the weekend.
do not add unneeded args