added missing glibc requirment to Assetto Corsa

lgsm/config-default/config-lgsm/acserver/_default.cfg

@@ -137,7 +137,7 @@ querytype=""
 # Do not edit
 gamename="Assetto Corsa"
 engine="unity3d"
-glibc=""
+glibc="2.15"
 
 #### Directories ####
 # Edit with care