are now configurable via the following news keys in the [Mail] section of the
sbbs.ini file:
	NewMailNotice
	ForwardNotice

Using the newly updated string literal support to allow for Ctrl-A codes using
C charater literal notation (\1) for control-A codes and standard C-escaping
of carriage-return (\r), line-feed (\n), etc.
Beginning and trailing space characters are also preserved (if specified) in
the key values.

The default strings are updated/different from what was previously hard-coded
in mailsrvr.c. If you want the local timestamp (back) in the notice, change
the '%.0s' in the default string to just '%s'.