[DS-422] Fix missing etc error, add deprecation warning

git-svn-id: http://scm.dspace.org/svn/repo/dspace/trunk@4711 9c30dcfa-912a-0410-8fc2-9e0234be79fd

dspace/src/main/config/build.xml

@@ -545,6 +545,8 @@ Common usage:
 
         <mkdir dir="${dspace.dir}/lib" />
 
+        <mkdir dir="${dspace.dir}/etc" />
+
         <mkdir dir="${dspace.dir}/webapps" />
 
         <mkdir dir="${dspace.dir}/exports" />
@@ -710,6 +712,9 @@ Common usage:
             <fileset dir="lib" />
         </copy>
 
+        <!-- NB: no regular use is made of etc/ files in an installed
+        - system, so this step is 'deprecated', and will eventually
+        - be removed.  -->
         <delete failonerror="no">
             <fileset dir="${dspace.dir}/etc" includes="**/*" />
         </delete>
@@ -718,10 +723,6 @@ Common usage:
             <fileset dir="etc" />
         </copy>
 
-    	<delete failonerror="no">
-    	            <fileset dir="${dspace.dir}/etc" includes="**/*" />
-    	        </delete>
-
     	<copy todir="${dspace.dir}/solr" preservelastmodified="true">
     	    <fileset dir="solr" />
     	</copy>