cmake export_jars(FILE) examples

HDFGroup/hdf4 config/cmake/UseJava.cmake :394 

export_jars(TARGETS <jars>...
            [NAMESPACE <namespace>]
            FILE <filename>)

HDFGroup/hdf4 HDF4Examples/config/cmake/UseJava.cmake :394 

export_jars(TARGETS <jars>...
            [NAMESPACE <namespace>]
            FILE <filename>)

InsightSoftwareConsortium/ITK Modules/ThirdParty/HDF5/src/itkhdf5/config/cmake/UseJava.cmake :394 

export_jars(TARGETS <jars>...
            [NAMESPACE <namespace>]
            FILE <filename>)