Try jman(1) from ports/japanese/man instead of man(1) for japanese manual

pages if LANG is set to ja_JP.eucJP and the port is installed.
Diablo packages contain japanese manual pages and jman seems to format them
mostly fine.

Reviewed by:	glewis (maintainer)

java/javavmwrapper/src/javavmwrapper.sh

@@ -452,8 +452,13 @@ manualpageVM () {
     # Run man(1)
     MANPATH="${JAVA_HOME}/man:${MANPATH}"
     export MANPATH
-    setJavaOptions man "`basename ${JAVA_HOME}`"
-    exec man -S 1 ${_JAVAVM_OPTS} ${1}
+    if [ "${LANG}" = "ja_JP.eucJP" -a -x "${_JAVAVM_PREFIX}/bin/jman" ]; then
+	setJavaOptions jman "`basename ${JAVA_HOME}`"
+	exec ${_JAVAVM_PREFIX}/bin/jman -S 1 ${_JAVAVM_OPTS} ${1}
+    else
+	setJavaOptions man "`basename ${JAVA_HOME}`"
+	exec man -S 1 ${_JAVAVM_OPTS} ${1}
+    fi
 }
 
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