allow tomcat to be memory-controlled with JVM flags

tomcat/rc.tomcat

@@ -5,6 +5,7 @@
 
 %config
     tomcat_enable="$openpkg_rc_def"
+    tomcat_flags="-Xmn256M -Xms512M -Xmx2048M"
     tomcat_home="@l_prefix@/libexec/tomcat"
     tomcat_log_prolog="true"
     tomcat_log_epilog="true"
@@ -33,6 +34,7 @@
     eval `JAVA_PLATFORM="sun-jdk" @l_prefix@/bin/java-toolkit -e`
     CATALINA_HOME="$tomcat_home"; export CATALINA_HOME
     CATALINA_PID="$tomcat_pidfile"; export CATALINA_PID
+    CATALINA_OPTS="$tomcat_flags"; export CATALINA_OPTS
     $CATALINA_HOME/bin/startup.sh
 
 %stop -u @l_rusr@
@@ -41,6 +43,7 @@
     eval `JAVA_PLATFORM="sun-jdk" @l_prefix@/bin/java-toolkit -e`
     CATALINA_HOME="$tomcat_home"; export CATALINA_HOME
     CATALINA_PID="$tomcat_pidfile"; export CATALINA_PID
+    CATALINA_OPTS="$tomcat_flags"; export CATALINA_OPTS
     $CATALINA_HOME/bin/shutdown.sh -force
     rm -f $tomcat_pidfile 2>/dev/null || true