Item13180: Using Foswiki::Sandbox breaks bootstrap

When Sandbox is loaded, it loads Foswiki.pm which runs the bootstrap for
a 2nd time.  This clobbers the bootstrap process.  Untaint directly
rather than calling Foswiki::Sandbox
Item12381: Review Config.spec files

We've been really inconsistent, but since Config.spec is executed,
ending with a 1; results in a consistent return code.