component : update config with joint to cartesian position

this configuration for the lineardelta uses a component that
translates the joint positions to the cartesian positions. Since
the JA4 branch is not merged yet this is a temporary solution in
getting the correct nozzle velocity for use with velocity
controlled extrusion.

install:
comp --install lineardeltajointscartesian.comp

This component is directly taken from the lineardelta kinematics.
script : update scripts for better parsing the slic3r gcode file

sometimes the slic3r retract/unretract is not consistent.
correct-retract-on-next-layer.py corrects that

added also author.py and g1tog23.py (from linuxcnc website) to
have all the prerequisits for running the cleanup script in
one location

furthermore I have fixed the removing of some temporary files
which had been commented out for debugging purposes
scripts : fix small issue of wrongly commented printline
Merge pull request #213 from luminize/vel-control-extruding

velocity controlled extruding update
Remove machinekit-xenomai pkg kernel Depends:

Until kernel package relationships are resolved correctly.  See
issue #224.
Merge pull request #225 from zultron/master

Remove machinekit-xenomai pkg kernel Depends:
components : change IO pins of pid to IN

it was not possible to connect an IO pin to another writing pin
for example "net signal mux2.0.out pid.0.bias"

changed were:
Pgain
Igain
Dgain
FF0
FF2
deadband
maxerror
maxerrori
maxerrorD
maxcmdD
maxcmdDD
bias
maxoutput
docs : update manpage pid.9 for use of IN pins
Merge pull request #226 from luminize/input-pins-for-pid

components : change IO pins of pid to IN
hal/utils: reorder libs for linking halcmd

makes the Ubuntu linker more comfortable
Turn on blending by default
Fix for F-word limit in position sync
emc/tp/tp.c: fold a long line
Merge pull request #228 from mhaberler/feed-fix

trajectory planner: fix  F-word limit in position sync, enable blending by default
Fix x86_64 RTAI math `CFLAGS`

- `rtai-config --arch` output changes with v4.0
  - instead use `$host_cpu` from `AC_CANONICAL_HOST`

- add `-mpreferred-stack-boundary=4` to enable SSE instructions in
  kmodules on newer GCC versions
  - http://mail.rtai.org/pipermail/rtai/2013-December/026198.html
Merge pull request #231 from zultron/master

Fix x86_64 RTAI math `CFLAGS`
Added an additional check for target velocity of the next segment to fix velocity overrun with slow acceleration machines
Added G61 and G61.1 distinction in TP

Added an additional value for termCond / canonMotionMode to represent
explicit exact stop (vs. exact path). Now, canon and motion pass one of
3 values as terminal condition (exact stop, exact path, or blend), and
the TP handles this accordingly. Exact path is the same behavior as
exact stop, EXCEPT when lines are tangent, in which case it does not
stop.
TP: Cleaned up a few function definitions (style only)

Fix for line wrapping on tpCheckEndCondition
Merge pull request #234 from robEllenberg/mk-master

Fix for G61 Issue