nvda

d16d127f - Config: simplify secure screen startup by checking if NVDA is installed.

Config: simplify secure screen startup by checking if NVDA is installed. No more support for XP/Vista/7 RTM means: * No more NVDA service. * No more check for presence of Ease of Access. Thus, the secure screen startup checker just returns if NVDA is installed, thus ready to be transformed into a flag in a future release.