Install memcached for GS/pA

src/freedombone-app-gnusocial

     repair_databases_script
 
     apt-get -yq install php-gettext php-curl php-gd php-mysql git curl
-    apt-get -yq install php-memcached php-intl exiftool libfcgi0ldbl
+    apt-get -yq install memcached php-memcached php-intl exiftool libfcgi0ldbl
 
     if [ ! -d /var/www/$GNUSOCIAL_DOMAIN_NAME ]; then
         mkdir /var/www/$GNUSOCIAL_DOMAIN_NAME

src/freedombone-app-postactiv

     repair_databases_script
 
     apt-get -yq install php-gettext php-curl php-gd php-mysql git curl
-    apt-get -yq install php-memcached php-intl exiftool libfcgi0ldbl
+    apt-get -yq install memcached php-memcached php-intl exiftool libfcgi0ldbl
 
     if [ ! -d /var/www/$POSTACTIV_DOMAIN_NAME ]; then
         mkdir /var/www/$POSTACTIV_DOMAIN_NAME