The NSIS based installer currently does not install qemu-ga.
It installs the executables and other files for the QEMU system emulation.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>