Installer registers in the Windows registry where mozilla.exe gets
installed to.
Installer is aware of the previous mozilla.exe installation location
and offers it as the default destination location.
Installer now is able to show a Readme.txt in the SetupType dialog.
Eliminated most of the "Netscape" and replaced it with "Mozilla"
a=chofmann
r=sgehani
git-svn-id: svn://10.0.0.236/trunk@56408 18797224-902f-48f8-a5cc-f745e15eee43
