compiler_wrapper: bundle.py default output dir

This CL implements defaulting the output directory for bundle.py to the
location of compiler wrapper files in third_party/chromiumos-overlay.
This also prevents bundle.py from creating directories unless a new
--create flag is specified.

BUG=None
TEST=Manually tested

Change-Id: I64d055a73332d3faafad730beda30886212346ee
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/3016910
Commit-Queue: Ryan Beltran <ryanbeltran@chromium.org>
Tested-by: Ryan Beltran <ryanbeltran@chromium.org>
Reviewed-by: George Burgess <gbiv@chromium.org>
1 file changed