[icu-support] 4 classes in icu4jni counld not be loaded in other jvm

[Tony W. <wuy...@gm...>]

icu4jni-3.4.jar contains 4 classes
that can't be loaded in other jvm because they extend classes from sun.io
package. These classes are:

com.ibm.icu4jni.converters.ByteToCharConverterICU extends
sun.io.ByteToCharConverter
com.ibm.icu4jni.converters.ByteToCharGB18030 extends
ByteToCharConverterICU
com.ibm.icu4jni.converters.CharToByteConverterICU extends
sun.io.CharToByteConverter
com.ibm.icu4jni.converters.CharToByteGB18030 extends
CharToByteConverterICU

I found that no other classes in ICU4jni depend on them. What those
classes could be really needed for? Shall I simply delete them? does
it affect the function of icu or whatever? Thanks a lot.

-- 
Tony Wu
China Software Development Lab, IBM