halshow needs stuff from -cnc

[kinsamanka]

halshow is not useable because it needs halshow.tcl, linuxcnc.tcl and linuxcnc.so: https://github.com/machinekit/machinekit-hal/blob/fc6e92b44bd224a1c27f1f4341907c1054286e80/src/Makefile#L565-L569 https://github.com/machinekit/machinekit-hal/blob/9f6c219475924cb92a57a3f23b6f45d437668d3d/tcl/bin/halshow.tcl#L19-L20 https://github.com/machinekit/machinekit-hal/blob/9f6c219475924cb92a57a3f23b6f45d437668d3d/tcl/linuxcnc.tcl.in#L59

[zultron]

Since merging #282 (see #267), the halshow program isn't in the machinekit-hal repo anymore. It is still available, and works fine, in the LinuxCNC tree that will soon be promoted to the MK org. For now, see this comment, which points at the working branch and provides brief build instructions.