changeBaseLayer zoom level change

[crschmidt]

When you change a base layer, you zoom out. Bart thinks he has a fix, and it seems relatively low cost. Get buy in, and decide whether it goes into 2.5.

[crschmidt]

See last comment to #504.

[tschaub]

fix getZoomForResolution

[tschaub]

fix it

[tschaub]

crschmidt kindly pointed out that we can break out of this loop a bit early, assuming the universe and resolutions are ordered. uz kindly pointed out that the overview map tests were fooling IE into thinking there was a problem. Instead of trashing the overview map control entirely, I've changed the tests to fail only if the normalized difference falls below some threshold, keeping us all sane.

Please let this in.

[euzuro]

ALL GOOD MURDOCH. please commit, mark pullup. tests pass ie6 and you say they pass ff.

[tschaub]

(In [4381]) New behavior for layer.getZoomForResolution. This method now returns the index of the resolution closest to the passed in resolution - making for fewer unwanted resolution changes, and a generally happier populace (see #990).

[tschaub]

With all sorts of warm feelings towards my kind reviewers, I mark this pullup.

[crschmidt]

(In [4390]) Pullup changes to trunk for RC2. Includes drag-fires click changes (Closes #982), comment/documentation/requires changes (Closes #983, #993, #988), Fixing post support in proxy.cgi (Closes #991), baseLayer zoom level change (Closes #990), typo in Layer.Image.setURL (Closes #985), and a fix or the Layer.Google bug caused by Google's changing internals (#994). RC2, here we come.