meson: look for TcAdsDll without "lib" prefix
meson: look for TcAdsDll without "lib" prefix

This seems to work on our targets and even on Windows (for the
moment...).

Signed-off-by: Patrick Bruenn <27dd71a6a4a167461f53ec06010a2a08d399a527@beckhoff.com>

Beckhoff/ADS,Beckhoff/ADS,Beckhoff/ADS,Beckhoff/ADS