[msvc-fix] Fix NMake builds, disable bool warning
[msvc-fix] Fix NMake builds, disable bool warning

/wd4800 disables a warning about converting between bools/ints

/MP option currently kills NMake compilation as this is passed to rc.exe
(resource compiler). /MP is worthless in this case anyway as the
compiler is called once per file.

tpaviot/oce,Tridify/oce,tpaviot/oce,BenoitPerrot/oce,tpaviot/oce,Tridify/oce,Tridify/oce,BenoitPerrot/oce,BenoitPerrot/oce,BenoitPerrot/oce,tpaviot/oce,Tridify/oce,tpaviot/oce,BenoitPerrot/oce,Tridify/oce