Previously, Servd::Enabled() returned true by default when the
LIBICSNEO_USE_SERVD environment variable was not set. This caused
DeviceFinder::FindAll() to take the Servd::Find() path and skip all
direct transport discovery (CDCACM, DXX, PCAP, etc.) even when no
servd daemon is running, silently returning zero devices.
The intended behavior is opt-in: users who want to use servd should
explicitly set LIBICSNEO_USE_SERVD=1. Change the default to false so
direct device discovery works out of the box.
LIBICSNEO_USE_SERVD=1 continues to enable servd as before.
Gowtham Nanjukutty (XC-CP/ECC2.3)
Kyle Schwarz
Thomas Stoddard