javadoc warning in httpserver.

see discussion on core-libs-dev mailing list:
  http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-February/009225.html

>: make381 httpserverdocs
/usr/bin/mkdir -p ../../build/solaris-i586/tmp/docs/doctmp
rm -f ../../build/solaris-i586/tmp/docs/doctmp/httpserver.options
/usr/bin/mkdir -p ../../build/solaris-i586/tmp/docs/doctmp
rm -f ../../build/solaris-i586/tmp/docs/doctmp/httpserver.packages
rm -f -r ../../build/solaris-i586/docs/jre/api/net/httpserver/spec
/usr/bin/mkdir -p ../../build/solaris-i586/docs/jre/api/net/httpserver/spec
# Summary for ../../build/solaris-i586/docs/jre/api/net/httpserver/spec/index.html
# Options (httpserver.options):
# -XDignore.symbol.file=true -quiet -use -keywords
# -sourcepath '../../src/share/classes:../../build/solaris-i586/impsrc:../../build/solaris-i586/gensrc:../../src/share/../solaris/classes:../../src/share/../windows/classes:../../src/share/doc/stub'
# -encoding 'ascii'
# -nodeprecatedlist
# -doctitle 'Java™ HTTP Server'
# -windowtitle 'Java HTTP Server b00'
# -header '<strong>Java HTTP Server</strong><br><strong>DRAFT&nbsp;internal-b00</strong>'
# -bottom '<font size="-1"><br> Copyright &#x00a9; 2005, 2012, Oracle and/or its affiliates. All rights reserved.</font><br><strong>DRAFT&nbsp;internal-b00</strong>'
# -linkoffline '../../../../../api' '../../build/solaris-i586/docs/api/'
# Packages (httpserver.packages):
# com.sun.net.httpserver
# com.sun.net.httpserver.spi
/java/re/jdk/1.8.0/promoted/latest/binaries/solaris-i586/bin/javadoc -J-XX:-PrintVMOptions -J-XX:+UnlockDiagnosticVMOptions -J-XX:-LogVMOutput -J-client -J-Xmx612m -J-Xms512m -J-XX:PermSize=32m -J-XX:MaxPermSize=160m -bootclasspath ../../build/solaris-i586/classes -d ../../build/solaris-i586/docs/jre/api/net/httpserver/spec \
          @../../build/solaris-i586/tmp/docs/doctmp/httpserver.options @../../build/solaris-i586/tmp/docs/doctmp/httpserver.packages
javadoc: warning - Error reading file: ../../build/solaris-i586/docs/api/package-list
../../src/share/classes/com/sun/net/httpserver/spi/HttpServerProvider.java:81: warning - @code("httpServerProvider") is an unknown tag.
2 warnings