gdm XDMCP and file descriptor fixing

[Warren Togami]

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=110315
GDM miscounts current sessions
I was looking at this problem for a while, and yesterday copied George 
Lebl's solution in gdm-2.5.90.0 of recounting.  I did not test it fully, 
but it also seems to avoid the file descriptor leak described in this 
below bug.  This patch is a bit of a hack and inefficient, but copied it 
anyway since it seems to work and it was from upstream.


https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=113154
GDM leaking file descriptors
The link to GNOME bugzilla indicates a similar problem to #110315 above. 
    Then today Bart Martens posted a much simpler patch that should fix 
both the file descriptor and XDMCP session counter issue.  I did not yet 
test this patch.

Please help me to verify which patch is more correct.

Warren Togami
wtogami at redhat.com