Partial revert of 1ba9675c, 87b7ceff, 48d7c7b3, and 0a23a512

"I can't think of a reason I'd want scfg and echocfg to remain windows (gui) programs"
                                              -- Digital Man

While I'm here, hack up some SyncTERM vcxproj stuff (which almost
certainly doesn't work, but since I can actually test it now, I
may as well try)