Use Toshiyuki Takahei's FLHACKs.  Reorder functions so we don't
need quite so many of them.  Restructure msg() and warn() likewise.

Set an initial display context number so Gview can track future window changes.

if some were fixed-oriented and others screen-facing.
Portability tweak from Toshi -- be even more pessimistic about stack size.

or (new) little-endian binary.  Good for Toshi's constellation figures,
which are in little-endian binary format.

gets changed (as between stereo/mono, or window-detachment).
Pass the news to the texture layer so we don't lose textures.
Or at least so we can arrange not to lose em, not sure this works yet...

Add hooks for Toshiyuki Takahei's FLHACK FLTK stubs.

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.

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.

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

nobody else has heard of it.

to stop animation.

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.

and also seem to require an additional file, config.sub.
Who needs em.