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git mv R/image2k.R R/image2k.R.in
trying to get Version: number in man/image2k-package.Rd from the
version number in configure.ac.  this is very complicated, here's an
e-mail to r-devel@r-project.org, on this date, which explains:
----
hi.  i was hoping to automatically set the Version: number in my package
description file (image2k-package.Rd) in the man directory by using a
.in file in the same directory.  "R CMD build" excludes the .in file
because the routine .check_package_subdirs() in QC.R (which build calls)
doesn't like that file.

.check_package_subdirs() also checks files in R/, and at *that* point in
the code says "now configure might generate files in this directory" and
explicitly allows any files that end in .in.  i wonder if that code
could be duplicated for the case of files in man/?  a diff to that
effect (just copying three lines from the immediately prior case for R/)
is provided below.

(as a check as to the viability of this, i manually added my
man/image2k-package.in file to the tarball built by build, and both
check and install seemed to survive without any problems.  a sample size
of 1 is *always* my favorite. :)

cheers, Greg Minshall
----
--- src/library/tools/R/QC.r	2014-03-25 01:15:06.000000000 +0200
+++ src/library/tools/R/mod-QC.r	2014-07-06 14:05:46.000000000 +0300
@@ -4372,6 +4372,9 @@
                                           full.names = FALSE,
                                           OS_subdirs = OS_subdirs)
         wrong <- setdiff(all_files, man_files)
+        ## now configure might generate files in this directory
+        generated <- grep("\\.in$", wrong)
+        if(length(generated)) wrong <- wrong[-generated]
         if(length(wrong)) {
             wrong_things$man <- wrong
             if(doDelete) unlink(file.path(dir, "man", wrong))
cleanup Makefile.am a bit.
man/image2k-package.Rd.in to get Version: number automatically from
configure.ac.

rename tests/md5image.R to tests/md5image; R install (i think it is)
seems to run whatever .R file it finds in this directory.
better testing...
more better testing.
don't do anything if sourced.
splitting it apart to make it usable for some other functions.
getting better.
re-factor to use md5 bits for R unit tests.
minor fixes.  (before major surgery.)
getting testing, hopefully.
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added test of writing out then reading back.
rmd5image.R --> rmd5image.R.in (to deal with have_imlib2, etc.).
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rmd5image.R.in
moved to image2k.R.in (can't figure out why this file doesn't go away).
ignore some more files.