updated xwrap.h to be the same as in libAfterBase and fixed compilation under newer MSVC
updated xwrap.h to be the same as in libAfterBase and fixed compilation under newer MSVC

born2late/afterstep-devel,born2late/afterstep-devel,born2late/afterstep-devel,born2late/afterstep-devel,born2late/afterstep-devel