ftbfs with jdk10

[Michael Hudson-Doyle]

libjide-oss-java 3.7.2+dfsg-1ubuntu1 failed to build with lots of errors like this:

    [javac] /<<BUILDDIR>>/libjide-oss-java-3.7.2+dfsg/src/com/jidesoft/plaf/LookAndFeelFactory.java:29: error: package com.sun.java.swing.plaf.windows does not exist
    [javac] import com.sun.java.swing.plaf.windows.WindowsLookAndFeel;

It seems that it's been broken by this change in the jdk: https://bugs.openjdk.java.net/browse/JDK-8189656 ("The Windows L&F should be moved out from the shared folder") which means that the com.sun.java.swing.plaf.windows classes are not built as part of our jdk10 distribution.

In general, upstream seems to not have any support for jdk 10 so this seems unlikely to be fixed before GA (to put it mildly). Perhaps the package will have to be removed, which will affect 10 or so downstream packages.