* Added optional '-S <span-spec>' argument to astribank_hexload:
- Allow passing PRI span specification to EC firmware loader.
- The span specifications is whitespace/comma separate list
of items.
- Each item is: <span>:<type> (Example: 3:T1)
- The <span> may use shell-like globbing (e.g: *:E1 or [12]:T1)
- Any span not matched in the span specification will be set
as without the new '-S' option (i.e: depends on the '-A' option).
* Adapted xpp_fxloader:
- Read specification for both device label and wildcard from
/etc/dahdi/span-types.conf
- If the result is non-empty, pass it as '-S <span-spec>' to
the EC firmware loader.
