Disable UBSan for 'sanitize' builds
Disable UBSan for 'sanitize' builds

Boost has a bug (https://svn.boost.org/trac/boost/ticket/11632) that
still hasn't been fixed upstream which triggers UBSan.

As we don't want to pull in our own patched boost I'll just disable
UBSan for now.

pmprog/OpenApoc,FranciscoDA/OpenApoc,FranciscoDA/OpenApoc,steveschnepp/OpenApoc,steveschnepp/OpenApoc,Istrebitel/OpenApoc,FranciscoDA/OpenApoc,pmprog/OpenApoc,Istrebitel/OpenApoc