8030726: tools/javac/NoStringToLower.java fails due to enforcement no use of String.toLowerCase on non-langtools classes Summary: Fix NoStringToLower test to only enforce ban on String.toLowerCase on langtools classes Reviewed-by: vromero, jfranck Contributed-by: paul.govereau@oracle.com

/*
 * @test  /nodynamiccopyright/
 * @bug 6177732
 * @summary add hidden option to have compiler generate diagnostics in more machine-readable form
 * @compile/fail/ref=Error.out -XDrawDiagnostics Error.java
 */
class Error
{
    static void error