Regression : some xsl functions are not behaving properly

1. copy-of a string constant containing character entity
2. contains() function using a numbered entity

reproducible with jaxp1.4 b05 jars

testcase attached - test1.java, htmllat1.dtd, copy19.xml, copy19.xsl and copy19.gold.out(expected output)

javac test1.java
java -Djava.endorsed.dirs=${jaxp14-b05-jars} test1

same testcase can be used for -
copy20.xml , copy20.xsl and copy20.gold.out(expected output)
string130.xml ,string130.xsl & string130.gold.out(expected output)
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