wj200: put manpage in correct section
docs: fix EMCIO indentation level

Before this commit, the EMCIO section was at indentation level 4, which
made it a sub-section under [AXIS_n].

This commit fixes it to be at indentation level 3, which makes it a peer
of [AXIS_n] and the others.
docs: fix some anchor names in ini_config

The [AXIS_n] and [EMCIO] sections used that bogus asciidoc syntax where
the anchor name went on the same line as the section heading words.
This makes some weird version of the HTML rendering of the section
heading appear in the anchor name.

It used to look like this:

    ini_config.html#_axis__lt_num_gt_section_a_id_sub_axis_section_a

This commit fixes the syntax so the anchor appears on the line before
the section heading, which makes everything copasetic.

Now it looks like this:

    ini_config.html#sub:AXIS-section
Ignore new auto-generated files
Don't depend on comp's default (and unredundantify the command)
Fix parallel build failure on wj200_vfd
Clear saved state from previous NURBSes to avoid bogus motion

Previously if an incorrect NURBS specification was given, such as when
there aren't enough control points, an error would be generated, but a
second load would succeed because there were leftover control points
from last time.  This caused weird behavior such as every second program
load succeeding (when it should have failed every time), and then of
course giving bogus motion when run.
NURBS: fix biarc G1 continuity

The center of the second half of each biarc was wrong.
Clear saved state from previous NURBSes to avoid bogus motion

Previously if an incorrect NURBS specification was given, such as when
there aren't enough control points, an error would be generated, but a
second load would succeed because there were leftover control points
from last time.  This caused weird behavior such as every second program
load succeeding (when it should have failed every time), and then of
course giving bogus motion when run.
NURBS: fix biarc G1 continuity

The center of the second half of each biarc was wrong.
Merge branch 'v2.5_branch' into 2.6
Merge branch '2.6'