Build failing with:

    [javac] Compiling 147 source files to C:\7C81E7~1\7CLIEN~2\build\windows-amd64\tmp\deploy\testclasses
    [javac] C:\7clientu7_64P\7client_cpu\deploy\test\common\com\sun\deploy\util\FXLoaderTest.java:37: error: cannot find symbol
    [javac] IOHelpers.copyFile(new File("data/jars/sealed.jar"),
    [javac] ^
    [javac] symbol: method copyFile(File,File)
    [javac] location: class IOHelpers
    [javac] Note: Some input files use unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 1 error