Xnest was half-using midispcur and doing a bad job of it. Replace all of that code with mipointer which does a lot of the work. Support DDXen which don't provide GetWindowPixmap, or which return NULL for the root pixmap.
https://freedesktop.org/bugzilla/show_bug.cgi?id=859 Added Files: Imakefile damage.c damage.h damagestr.h