Summary
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Change the type of the parameter for XPathFunction.evaluate from List<Object> to List<?>.

Problem
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In JDK-8191038, the type of the parameter for XPathFunction.evaluate was changed
from List to List<Object>. However, a better compatibility may be provided by generifying 
the evaluate method to accept a List<?> rather than a List<Object>.

Solution
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Change the type of the parameter for XPathFunction.evaluate from List<Object> to List<?>.

Specification
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src/java.xml/share/classes/javax/xml/xpath/XPathFunction.java

    - public Object evaluate(List<Object> args)
    + public Object evaluate(List<?> args)