Review 21114

C. Thomas Tyler
Enhanced SDP Python installer to 'http:' protocol in place of
'ftp:' in URL references.  This works around a problem I encountered
with outbound 'ftp' being blocked by some corporate firewall (not the
local machine firewall).  Using 'http:' in the URL works just as well
for the purposes of this script.

Enhanced SDP Perl installer in the same way, but the SDP Perl is broken
now for unrelated reasons.
Tip: Use n and p to cycle through the changes.