object - the whole screen moves. This fix allows cursor keys in runmode
while disabling them in editmode.

* the commits from Pd-extended Sourceforge were then (selectively) merged
  with the ported gui code.

fix up Windows-specific build script to just rsync the pd/doc directory. At some point we need to use makefile.in for Windows just like Linux and OSX do...

keep midr-mjpeg.mov in pd/doc/media, but remove all the copies of external media files. There aren't any references to those copied files in any of the docs, so they are useless. This means the root "doc" directory is now gone.

remove patches from "messageoddness" directory that were either fixed earlier in Pd-l2ork or are misleading/wrong

repo cleanup: remove tcl/tk build infrastructure and scripts, old patches, automated build scripts for pd-extended, old gui plugins, and unnecessary install-time dependencies

update contributor guide, making clear a prototyping language cannot itself be build out of prototypes