How to rename osascript in the administrator privileges dialog?
I found a much better way of doing this, by digging through the Applescript doc on the Apple Developer's Site. I found this release note for  Applescript in MacOS 10.10

It says:

do shell script can now specify a custom prompt to use in the password dialog. [15194980]


However, it neglects to say how you can do that. After some guesswork, I figured out that there's a prompt clause that lets you replace osascript wants to make changes... with whatever you want when using do shell script...with administrator privileges in a script invoked by osascript.  For example:

osascript -e 'do shell script "ls -l" with prompt "The Great And Powerful OZ " with administrator privileges'


generates a dialog box that looks like:


I hope this helps someone.