it seems to get the data completely wrong (most X's = 0, etc.).
If someone ever figures out why, I'd be curious to know.

Move colorpatch::draw()'s body here.

if sqrtf() isn't available.  This is 'way better than using -Dtanf=tan etc. in Makefile.

Just leave Steve Marx's insistence on FLTK >=1.1.x.
Check for values.h.
If we seem to be running on MacOS X, add more special tests:
   Search -lmx for sqrtf() etc., rather than a bunch of -D'efines for float functions.
	If they (or at least sqrtf) are not present, geometry.h now #define's em.
   Insist on {fltkdir}/FL/mac.r so we can use Rez to tag partiview as a GUI app,
	otherwise it can never get keyboard/mouse focus.

needed on MacOS X.

   add general euler-angle functions,
	euler2t t2euler euler2quat quat2euler
	meuler2t t2meuler meuler2quat quat2meuler
	The "meuler" forms take axis-order specs in Maya style,
	but the angles are accepted/returned always in X,Y,Z order,
	so meuler2t( "zxy", 17,35,-112 ) = rotZ(-112) * rotX(17) * rotY(35).
	"zxy" is the same as the virdir axis order.

	The "euler" forms take axis-order specs in the reverse of Maya style,
	and expect/return angles in the same order as the axis-order spec,
	e.g. euler2t( "yxz", 35,17,-112 ) = meuler2t( "zxy", 17,35,-112 ).

   add stats()
	Accept a sequence of numbers, and accumulate their
	mean and variance.
	   ($svar, $N, $mean, $SDev) = &stats(val1, val2, ...)
	To accumulate more values, pass the first result ($svar)
	   ($svar, $N, $mean, $SDev) = &stats($svar, valN, valN+1, valN+2, ...)

Need config.h early.
Initialize "oldopengl".
More digits for "where".

nobody else has heard of it.

to stop animation.

as constructed by hiprv2speck from Hipparcos catalog (1/1239) and
General Catalog of Radial Velocities (3/3213).

to yield a partiview-format table of stars with 3-d space velocities.

Put alloca stuff before all other includes.

Make sure to AC_CHECK_HEADERS after CC and CPP are defined.
Use autoconf 2.52.  2.13 doesn't guess CC correctly on mingw32.