FAQ Update

FAQ Update
Tidied up some entries with incorrect casing
Added NT SP3 entry
Updated list of ported systems
Updated More Info entry with more web site details and list of all doco files
Moved mailing list subscriptions to separate entry
Removed reference to 'samba team mailing list' just in case people guessed
Updated nmbd -C entry, indicating obsolete.
General cleanup of document with indented lists.
Added url links where needed. Web docs will not show urls but will link,
text files will show file names AND urls
Fixed missing info where '\\' was being interpreted as '\' (used [\\])

If I get a warning before 1.9.17 is released, I'll clean up blank lines
from the text faq.  Don't want to do them now as I may modify the sgml again.

For those who don't know, we now maintain the FAQ as an sgml document,
and convert/create html and txt FAQs from that. We use LinuxDoc which is
now called SGMLtools.

Paul.