build system: remove the unused DEP variable

It's some kind of obfuscating fossil.
gmoccapy_1_1_5_8 - iteration over None object message

ver. 1.1.5.8
- message at start because of
  return(PlasmaClass(halcomp, builder, useropts))
  instedt off
  return[PlasmaClass(halcomp, builder, useropts)]
  resulting in iteration over none object
Merge branch '2.6' of ssh://norbert@git.linuxcnc.org/git/linuxcnc.git into 2.6
Merge branch '2.6'
gmoccapy_1_1_5_9 - corrected message system

ver. 1.1.5.9
- prepared yesno_dialog for user message,
  it does accept now pango markup
- wrong values in axis offset didn't show a message
  to the user, I fixed that
gmoccapy_1_2_0 - hal user message system introduced

ver. 1.2.0
- changed GetIniInfo to return also user message setups
- notification now supports pango markup in the messages
- added hal user messages similar to gsreeen to gmoccapy
  see gmoccapy_messages.ini for usage information
- updated the translation files for German and Spanish
gmoccapy_1_2_0 - gmoccapy_1_2_0 - hal user message system introduced

ver. 1.2.0
- changed GetIniInfo to return also user message setups
- notification now supports pango markup in the messages
- added hal user messages similar to gsreeen to gmoccapy
  see gmoccapy_messages.ini for usage information
- updated the translation files for German and Spanish
hm2_7i90: remove some dead code

This was left in accidentally when the 7i43 driver was converted for
the 7i90.  It's just misleading.
hostmot2: support for up to 8 chars device names in sserial

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>
hostmot2: properly support for up to 8 chars device names in sserial

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>
hm2_eth: remove duplicated info about successfull hostmot2 registration

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>
hm2_eth: add support for mesa 7i92 ethernet board

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>
estop-latch: improve documentation; set default pin values
hm2-stepper: estop when hm2 watchdog bites

Any machine with a proper physical estop chain will need to revise
this setup, but for a basic setup it is better than the previous status
quo.  (Closes: #391)

Signed-off-by: Jeff Epler <jepler@unpythonic.net>
v2.6.3
Merge remote-tracking branch 'origin/2.6'

Conflicts:
	VERSION
	configs/by_interface/mesa/hm2-stepper/hm2-stepper.hal
build: only do docclean when doc building enabled

this fixes an undefined variable warning

Signed-off-by: Jeff Epler <jepler@unpythonic.net>
build: give EXTRAFLAGS an empty definition

.. so that it's not a warning to refer to it when
--warn-undefined-variables is specified as a make flag

Signed-off-by: Jeff Epler <jepler@unpythonic.net>
build: Unconditionally enable -fno-strict-aliasing

This flag is supported in gcc 4.4, the oldest version we target
with linuxcnc 2.6.

Signed-off-by: Jeff Epler <jepler@unpythonic.net>
build: compute EXTRA_CFLAGS just once

We were repeatedly invoking the compiler on trivial input files
via $(call cc-option).  Using := assignment, these compiler invocations
occur only once.

Signed-off-by: Jeff Epler <jepler@unpythonic.net>