Instrumented libraries: improve parallel build
* Adds a --parallel option to build_and_package.py to build
the 4 instrumented library configs concurrently.
* Removes parallel make. Some libraries don't support parallel builds.
Additionally, there were many overrides to set the number of jobs to
1, and the only library that actually used parallel builds was
* Changes the -j argument to be the number of ninja jobs to use.
* Suppresses error output from nss.
4 files changed