[JXPATH-166] JXPathContextReferenceImpl.addNodePointerFactory not working anymore...

[JXPATH-166] JXPathContextReferenceImpl.addNodePointerFactory not working anymore. Add test case. revert -N C:/vcs/svn/apache/commons/trunks-proper/jxpath/src/java/org/apache/commons/jxpath/JXPathContext.java
    Reverted C:/vcs/svn/apache/commons/trunks-proper/jxpath/src/java/org/apache/commons/jxpath/JXPathContext.java
diff --summarize --depth=infinity --ignoreAncestry -r 1523175:1523033 https://svn.apache.org/repos/asf/commons/proper/jxpath/trunk
merge --depth=infinity -r1523175:1523174 https://svn.apache.org/repos/asf/commons/proper/jxpath/trunk C:/vcs/svn/apache/commons/trunks-proper/jxpath
    --- Reverse-merging r1523175 through r1523174 into C:/vcs/svn/apache/commons/trunks-proper/jxpath
    U   C:/vcs/svn/apache/commons/trunks-proper/jxpath/src/java/org/apache/commons/jxpath/JXPathContext.java
    Merge info recorded for C:/vcs/svn/apache/commons/trunks-proper/jxpath
     U  C:/vcs/svn/apache/commons/trunks-proper/jxpath
    Merge complete.
    ===== File Statistics: =====
    Updated: 1
    ==== Property Statistics: =====
    Updated: 2

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/jxpath/trunk@1564371 13f79535-47bb-0310-9956-ffa450edef68