#1312 Rule reference must not override rule name of referenced rule

[Andreas Dangel]

Found from [#1248].

If a rule reference also specifies the name and the name is different, then the referenced rule should not be changed. Otherwise the reference doesn't work anymore.

Example:

<?xml version="1.0" encoding="UTF-8"?>
<ruleset xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         name="pmd-eclipse"
         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd">
   <description>PMD Plugin preferences rule set</description>

    <rule name="ChangedNameReplaceHashtableWithMap"
        ref="rulesets/java/migrating.xml/ReplaceHashtableWithMap">
    </rule>
</ruleset>

Importing this ruleset in eclipse will change the rule to:

    <rule name="ChangedNameReplaceHashtableWithMap"
        ref="rulesets/java/migrating.xml/ChangedNameReplaceHashtableWithMap">
    </rule>

But "rulesets/java/migrating.xml/ChangedNameReplaceHashtableWithMap" doesn't exist.