Import LinuxCNC source tree

tests/save.0/README

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+Checks that 'halcmd save' produces the expected output, including
+loadable module parameters, parameter settings, linked pins, and thread
+functions.

tests/save.0/expected

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+# components
+loadrt threads name1=fast period1=100000
+#loadrt __fast  (not loaded by loadrt, no args saved)
+loadrt stepgen step_type=0
+loadrt sampler cfg=bb depth=4096
+# pin aliases
+# param aliases
+# signals
+newsig unlinked bit  
+# nets
+net dir stepgen.0.dir => sampler.0.pin.0
+net step stepgen.0.step => sampler.0.pin.1
+# parameter values
+setp fast.tmax                    0
+setp sampler.0.tmax                    0
+setp stepgen.0.dirhold           0x00000001
+setp stepgen.0.dirsetup           0x00000001
+setp stepgen.0.maxaccel                    2
+setp stepgen.0.maxvel                 0.15
+setp stepgen.0.position-scale                32000
+setp stepgen.0.steplen           0x00000001
+setp stepgen.0.stepspace           0x00000001
+setp stepgen.capture-position.tmax                    0
+setp stepgen.make-pulses.tmax                    0
+setp stepgen.update-freq.tmax                    0
+# realtime thread/function links
+addf stepgen.update-freq fast
+addf stepgen.make-pulses fast
+addf stepgen.capture-position fast
+addf sampler.0 fast

tests/save.0/test.sh

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+#!/bin/sh
+$REALTIME start
+halcmd -f expected
+halcmd save
+halcmd unload all
+$REALTIME stop