return up to the first 3 h1 tags when &geth1tag=1
is specified for an xml or json feed.
added &showimages=0 parm. also print image url.
added a few new search parms that can be used
to override collection defaults.
hide all clustered results.
max title len.
max summary excerpt/line width.
added copyCollRec() function to clone
setting of one coll to another.
Merge branch 'testing' into diffbot-matt