Added code to allow options to be overridden on subcalls. New Syntax: << scriptname (:options)? : ...
As you can see, the extra inserted :opts is optional.
Fixes:

silence values are now operational.

We can pass options in sayscript <<script:opt:val>> subcalls.

We can associate a sayScript with a format spec by using an unused
specifier character (like P), by giving the script that as a name or alias,
and then using %P in the saysentence format.

I've done some more work on the various set of scripts represented in the example say.conf.
I created the money script for en_US, and the euro countries, and pounds/pence for en_GB.
Several are missing the enumerations out to billions.

While referring to the da code in say.c, I made some upgrades to the da language file.