add support for cache directory

make configs use specific directory variables instead of just base_dir
so that one configuration can be used for fhs and legacy installations

conf/vanilla/autoload_configs/httapi.conf.xml

@@ -100,8 +100,8 @@
 	     Specify your public key with 'ssl-cert-path' and the private key with
 	     'ssl-key-path'. If your private key has a password, specify it with
 	     'ssl-key-password'. -->
-	<!-- <param name="ssl-cert-path" value="$${base_dir}/conf/certs/public_key.pem"/> -->
-	<!-- <param name="ssl-key-path" value="$${base_dir}/conf/certs/private_key.pem"/> -->
+	<!-- <param name="ssl-cert-path" value="$${certs_dir}/public_key.pem"/> -->
+	<!-- <param name="ssl-key-path" value="$${certs_dir}/private_key.pem"/> -->
 	<!-- <param name="ssl-key-password" value="MyPrivateKeyPassword"/> -->
 	<!-- optional timeout -->
 	<!-- <param name="timeout" value="10"/> -->
@@ -109,14 +109,14 @@
 	<!-- optional: use a custom CA certificate in PEM format to verify the peer
 	     with. This is useful if you are acting as your own certificate authority.
 	     note: only makes sense if used in combination with "enable-cacert-check." -->
-	<!-- <param name="ssl-cacert-file" value="$${base_dir}/conf/certs/cacert.pem"/> -->
+	<!-- <param name="ssl-cacert-file" value="$${certs_dir}/cacert.pem"/> -->
 
 	<!-- optional: specify the SSL version to force HTTPS to use. Valid options are
 	     "SSLv3" and "TLSv1". Otherwise libcurl will auto-negotiate the version. -->
 	<!-- <param name="ssl-version" value="TLSv1"/> -->
 
 	<!-- optional: enables cookies and stores them in the specified file. -->
-	<!-- <param name="cookie-file" value="/tmp/cookie-mod_xml_curl.txt"/> -->
+	<!-- <param name="cookie-file" value="/$${temp_dir}/cookie-mod_xml_curl.txt"/> -->
 
 	<!-- one or more of these imply you want to pick the exact variables that are transmitted -->
 	<!--<param name="enable-post-var" value="Caller-Unique-ID"/>-->