Rewrite rule in base htaccess is missing [L]

[madmatt]

The rewrite rule in the base .htaccess file (used when the public webroot exists but isn't the actual web root) lacks the [L] identifier, which I think we probably want in general to prevent infinite redirect loops. We just came across this in a client project that wasn't upgraded fully by the upgrader tool - it wrote the new RewriteRules to the project-root .htaccess file, but because the [L] flag wasn't set the original SS3 RewriteRule .* framework/main.php rule was overriding it.