the 'data' field in action tags may now refer to variables and api functions
to be expanded at runtime.

Syntax:

$varname
${varname}
&func_name(func args)


Exception:
variables that are numeric are still expanded at dialplan compile time based on the regex eg $1 $2 etc

Example:

<extension name="1000">
  <condition field="destination_number" expression="^(1000)$">
    <action appplication="my_route_app" data="$1"/>
    <action appplication="bridge" data="$destination"/>
  </condition>
</extension>

Here the $1 is ecaluated before the call begins setting it to 1000 based on the regex ^(1000)$
$destination is evaluated on the fly in execution once the my_route_app has run and has had a 
chance to set the variable 'destination' to the correct value.



git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@2994 d0543943-73ff-0310-b7d9-9358b9ac24b2