compiler.pri: on Windows, treat MSVC linker warnings as errors.
compiler.pri: on Windows, treat MSVC linker warnings as errors.

SuperNascher/mumble,LuAPi/mumble,unascribed/mumble,SuperNascher/mumble,LuAPi/mumble,LuAPi/mumble,SuperNascher/mumble,SuperNascher/mumble,LuAPi/mumble,SuperNascher/mumble,Lartza/mumble,Lartza/mumble,unascribed/mumble,unascribed/mumble,SuperNascher/mumble,unascribed/mumble,unascribed/mumble,LuAPi/mumble,Lartza/mumble,Lartza/mumble,unascribed/mumble,Lartza/mumble,LuAPi/mumble,LuAPi/mumble,Lartza/mumble,LuAPi/mumble,SuperNascher/mumble,SuperNascher/mumble,unascribed/mumble,SuperNascher/mumble,LuAPi/mumble,Lartza/mumble,Lartza/mumble,unascribed/mumble