We rebrand it anyways. Also, removed the non-ssl one

Abrowser: made about:abrowser the home page, disabled dns prefetch, disabled config button on newtab

debian/rules passes value of XFVENDOR to the package's configure script
as the value of the "--with-vendor-info" option.  This sets the string
in the "distributed by" message in the xfce4-about program.

debian/vendorinfo also needs to be changed because debian/rules installs
this file to /usr/share/xfce4/vendorinfo if the value of XFVENDOR is not
"Xubuntu".

Fixes issue #15432.

This reverts commit 08735df7.

Copied from
http://git.savannah.gnu.org/cgit/gnuzilla.git/commit/?id=58f127c1d5f8c89b9e55803701f734756d1cfa2a