using a hack from stackoverflow, get package to build for R using
Makefile.
trying to clean up for R CMD check
src/Makevars.in
delete src/Makevars.in
trying to make 'R CMD check' happier.
renaming some files (for "R CMD check")
getting rid of src/Makevars.in
minor edits (from R CMD check).
cleanup
get rid of S4 "pixmap + pixmap" class.  make it work (missing() rather
than is.null() to test argument presence).
general cleanup.
keep up-to-date with R/imagemean.R
should have been using identical() to test for equality of channels
and sizes of pixmaps.
make it pretty.
need image2k.h in distribution.
don't put .tar.gz files, or their output, in the package tar.gz file
DESCRIPTION is dead.  long live DESCRIPTION.in.
fill out fields (correctly?).
moving in the direction of some checking.
missing right curly brackets.