Implement name fetching capabilities for Webkit and Quicktime plugins
Adds support for new PluginAPI message (MEDIA_EVENT_NAME_CHANGED) that updates the "title" of the media. In WebKit plugin this is the contents of the <title> tag. In The QuickTime plugin it is the "display name" from the movie meta data
Made the "loaded_duration" parameter also implicitly set the progress percentage and send out MEDIA_EVENT_PROGRESS_UPDATED messages when it changes.
Made the quicktime plugin set the "loaded_duration" parameter in its update messages.
In the webkit plugin, don't try to load web browser plugins except on Windows. The flash plugin on the Mac crashes the webkit plugin when running under xcode.
svn merge -r 129913:131718 svn+ssh://svn.lindenlab.com/svn/linden/branches/pluginapi/pluginapi_05
Some branch shenannigans in the pluginapi_05 branch caused this to become a two-part merge.