Fix the construction of the bugzilla URL

The current implementation overwrites the URI path with "index.cgi"  This does not work if the URI to bugzilla is not at the root of the server, e.g.:

http://devserver.com/bugzilla

would be changed to:

http://devserver.com/index.cgi

instead of

http://devserver.com/bugzilla/index.cgi

Updated the code to concatenate index.cgi to the path already specified in the URI.