[8] Review request for JDK-8025684 - Fix Raw and unchecked warnings java.awt.image classes

[srikalyan chandrashekar]

Hi team ,  could someone review the fix
    Bug      : https://bugs.openjdk.java.net/browse/JDK-8025684
    Webrev   : 
https://github.com/srikalyc/JDKfixes/blob/master/java.awt.image.raw_unchecked_webrev.zip
    Fix      : Raw and unchecked warnings in AWT image classes fixed

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Thanks
kalyan