Allow JS test runner to run individual tests.
Allow JS test runner to run individual tests.

You can now do the following:

    $ ./test/javascript/run
    $ ./test/javascript/run basics
    $ ./test/javascript/run basics.js
    $ ./test/javascript/run share/www/script/test/basics.js

Thanks to Dale Harvey for the patch.

Closes COUCHDB-1112



git-svn-id: c1f8a8ec0b3bb2e99ab3413722f81f687760e79c@1086775 13f79535-47bb-0310-9956-ffa450edef68

fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb