Our bare-word character set is wider than JSON5's. Quote any
keys containing the extra characters so YAJL can parse them,
but don't quote keys unnecessarily.
Tests for this behavior are in dbStaticTest.db
Adjust the other tests that read links parsed by the dbStatic
parser that used bareword keys, which are no longer quoted.
In some cases the license-identification header was missing,
so I added that as well. Replaced the remaining headers that
specifically identified "Versions 3.13.7 and higher".
Makefiles and the build system were deliberately excluded.
