Move test/etc/default_run.py one directory up.

Also merge in the single use of apex_bootclasspath_utils.

This removes the awkwardly named etc/ directory.

Test: test.py -b -r --all-target --optimizing --64
Change-Id: I79a752cb3c2da4d50a6fc4c26e58056dc9224d0c
3 files changed