- Add README file to META-INF

- Change path of generated TLD to target/classes/META-INF

git-svn-id: https://svn.apache.org/repos/asf/struts/struts2/trunk@508612 13f79535-47bb-0310-9956-ffa450edef68

core/pom.xml

@@ -49,7 +49,7 @@
                 <artifactId>maven-apt-plugin</artifactId>
                 <configuration>
                     <A>uri=/struts-tags,tlibVersion=2.2.3,jspVersion=1.2,shortName=s,displayName="Struts Tags",
-                    outFile=${basedir}/src/main/resources/META-INF/struts-tags.tld,
+                    outFile=${basedir}/target/classes/META-INF/struts-tags.tld,
                     description="To make it easier to access dynamic data;
                     the Apache Struts framework includes a library of custom tags.
                     The tags interact with the framework's validation and internationalization features;

core/src/main/resources/META-INF/README.txt

@@ -0,0 +1,3 @@
+TLD file is generated inside META-INF after compilation.
+If META-INF is empty, Maven will not copy it to the "target/classes" folder.
+Please do not remove META-INF, or this file.