as this code has been reconsolidated in the base class for
all to use. For everyone, if the mime type is unknown or octet,
then try to guess a content type by file extension in doContent.
Also, if we can't find a mime type, create a new one for all platforms
so we don't need to bring up the ucth dialog.
sr=sspitzer
after we show the helper app dialog. So progress and load information is
now retargeted to a stand alone window instead of re-using the underlying
browser / mail window...In order to do this, the external app handler needed to implement nsIURIContentListener.
sr=r=rpotts
helperApps.rdf is now mimeTypes.rdf.
use the file locator to get the mimeTypes file.
fix the unix implementation of nsOSHelperAppService.cpp
to go to the base class to determine what application to launch.
r=mscott
mscott%netscape.com
rayw%netscape.com
sspitzer%netscape.com