More build-related changes + exposing more info
More build-related changes + exposing more info

Combine parent_php_running_builds and parent_ruby_running_gcc into a
single parent_scripting_running_builds which handles the general case of
some script running some make/compilation related program. Also add some
build-related command line prefixes.

Allow supervisor-related programs to spawn shells and access sensitive
files.

Allow sendmail config binaries to write below etc directly (their
children already could).

Add some directories related to phusion (system-as-a-container).

For a few rules add parent programs in the output so it's easier to
diagnose the context for an event.

Let varnishd spawn shells.

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