Fix #345269, noticed while helping George2 in IRC: Call node_view() instead of theme('node') to make stuff like CCK fields get output correctly in node markers.

#336995, reported by skyredwang: Disable caching for gmap_location blocks, because they do dynamic things.

Commit this while I'm in the middle of it because I'm really happy with it so far and I don't want to lose it. ;)

#330343, reported by fabio84 and also by epimeth in irc: Make script url valid again, I forgot that url() returns raw ampersands.

Let people pass map arrays to theme('gmap') without wrapping them in array('#settings' => ...). In theory.

* Remove references to mousewheel.js, clean up variable.
* Add support for Continuous Zoom, enabled by default.
* Add behavior flag for disabling Continuous Zoom.
* Remove workaround from may 2007 (rev 1.1.2.15) that was causing zooming problems.

* Add style keyword to the macro layer.
* Add code to merge styles in properly.
* Allow using references to styles in lines / polys.

* Delete marker associations properly.
* Join to {node_revisions} properly.
* Handle upgrading from a 5.x version after the changed I just made in that branch.

Add 'hl' parameter to allow the map to translate itself. (Part of #314777.)

Remove the markerdata hack.
Add a marker file generator and fix markers once and for all.
Add a button to the settings page to regenerate the marker cache.