SetPVToolsVersionOnFirstRun() GetPVToolsVersionOnFirstRun()
SetPVToolsVersionOnFirstRun() GetPVToolsVersionOnFirstRun()

On first run, the Install Agent writes a registry key with the version
of the drivers currently installed;
- '0' - system is clean; no drivers installed
- '7' - system has drivers other than 8.x installed
- '8' - system has drivers 8.x installed

Signed-off-by: Kostas Ladopoulos <7920ee5edb7fd3a4c6c6e3ebe9bd13d4a7f2eff1@citrix.com>

benchalmers/win-installer,OwenSmith/win-installer,benchalmers/win-installer,OwenSmith/win-installer,benchalmers/win-installer,kostaslamda/win-installer,xenserver/win-installer,kostaslamda/win-installer,OwenSmith/win-installer,kostaslamda/win-installer,OwenSmith/win-installer,xenserver/win-installer,xenserver/win-installer,OwenSmith/win-installer,xenserver/win-installer,benchalmers/win-installer,benchalmers/win-installer,kostaslamda/win-installer,xenserver/win-installer,kostaslamda/win-installer