CP-7112: Protect yyliineno definition based on the version of YY_FLEX being used.
CP-7112: Protect yyliineno definition based on the version of YY_FLEX being used.

When building with a newer version of YY_FLEX the parameter is initialised for us. Use
the version info about YY_FLEX to maintain setting this variable with older versions
of YY_FLEX.

Signed-off-by: Rob Dobson <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@rdobson.co.uk>
Signed-off-by: Frediano Ziglio <14cdc339e653bee16b9baab735d92664c449ffa1@citrix.com>

xenserver/xs-cim,xenserver/xs-cim,xenserver/xs-cim,xenserver/xs-cim,xenserver/xs-cim