pmd: update changelog etc. with new rule ConsecutiveAppendsShouldReuse

pmd/etc/changelog.txt

@@ -15,6 +15,8 @@ New Java rules:
 		- basic rule to check for existence for formal (javadoc) comments.
 	AvoidProtectedMethodInFinalClassNotExtending
 		- rule to avoid protected methods in final classes that don't extend anything other than Object.
+	ConsecutiveAppendsShouldReuse
+		- rule to encourage to reuse StringBuilder.append returned object for consecutive calls.
 
 CPD Command Line Changes:
   Added non-recursive option "--non-recursive" to not scan sub-directories

pmd/src/main/resources/rulesets/java/strings.xml

@@ -154,7 +154,7 @@ sb.append('a');		// use this instead
         class="net.sourceforge.pmd.lang.rule.XPathRule"
         externalInfoUrl="${pmd.website.baseurl}/rules/java/strings.html#ConsecutiveAppendsShouldReuse">
     <description>
-Consecutively calls to StringBuffer/StringBuilder .append must reuse the target object. This will improve the performance. 
+Consecutively calls to StringBuffer/StringBuilder .append should reuse the target object. This can improve the performance.
     </description>
     <priority>3</priority>
     <properties>

pmd/src/main/resources/rulesets/releases/510.xml

@@ -14,5 +14,6 @@ This ruleset contains links to rules that are new in PMD v5.1.0
 
     <rule ref="rulesets/java/design.xml/AvoidProtectedMethodInFinalClassNotExtending"/>
 
+    <rule ref="rulesets/java/strings.xml/ConsecutiveAppendsShouldReuse"/>
 </ruleset>