tests/bad_units_factor.svx,tests/cavern.tst: Test that "*units
backclino 0 percent" gives an error about the factor being zero.
tests/Makefile.am,tests/bad_units_factor.out: Add expected output
to make sure we're getting the errors we expect, not just the
expected number of errors.
src/commands.c: If *units is used to set units for LEVEL, PLUMB, or
POSITION, give an error rather than quietly ignore the attempt.
tests/: New regression testcase bad_units_qlist.
doc/manual.sgml: Add missing quantities to the list documented as
accepted by *units: LEFT, RIGHT, UP/CEILING, DOWN/FLOOR (missing
entirely); BACKCOMPASS/BACKBEARING, BACKCLINO/BACKGRADIENT (missing
from the main list, mentioned in list of the units that can be set
for them); COUNT (missing alternative name for COUNTER); DX/EASTING,
DY/NORTHING, DZ/ALTITUDE (incorrectly listed as X, Y, Z).  Reported
by Jonny Prouty.
lib/: Translation updates.
src/gfxcore.cc: Try to work around measuring line redraw issues on
Microsoft Windows by redrawing the whole window, which doesn't
seem to be measurably slower.
src/glbitmapfont.cc: Fix writing of Unicode characters above
BITMAPFONT_MAX_CHAR (which is 256 currently).
src/glbitmapfont.cc,src/glbitmapfont.h:
BitmapFont::get_text_extent() now uses the width of all glyphs,
rather than assuming all those > BITMAPFONT_MAX_CHAR have width 16.
src/mainfrm.cc: Fix GCC warnings.
lib/,src/: Add support for showing percentage gradient in the tilt
indicator in aven.  Show the units (degrees, grads, or percent) for
the tilt and bearing indicators.
NEWS: Update.
src/: Make cad3d remap control characters and spaces in station
names when generating PLT output in the same way aven does.
make_release: Add simple check for // comments in C sources.
make_release: Before release, build with -Werror to catch any
warnings which may have been missed.
src/cad3d.c,src/str.c,src/str.h: Rename s_cat_len() to s_catlen()
for consistency with s_catchar().
make_release: Run "make check" under valgrind.
NEWS,configure.ac: Update for 1.2.11.