[FYI] Post-XML

As I don't yet have simple functions to parse xml, I've finished 
(almost) the xml post code.

There's some differences for latest
http://www.ietf.org/internet-drafts/draft-koponen-sms-xml-03.txt
IETF draft, like it just define a <statusrequest> and we have
dlr-mask and dlr-url, so I've adjusted and set
<statusrequest>
	<dlr-mask>x</dlr-mask>
	<dlr-url>http://....</dlr-url>
</statusrequest>

and I've taked liberally the <from> and <to> (smsc directives) tags to
have:
kannel->appl: from = smsc-id, to=service-name
appl->kannel: from = authentication, to=smsc-id

Please compile documentation with --enable-docs --enable-drafts or check
at http://litux.org/~bruno/userguide.{html|rtf|pdf} and give me
suggestions, critics, flames, anything.

I'll need this (or something alike) for the end of the week.....


On sendsms-user, it supports multiple destinations, altough I've yet not
tested how many destinations we could have
(BTW: do we have any string limit in octstr ? internally, multiple
destinations is a string with numbers separated by space)