Remove Makefiles under the doc/ subdirectory, which we choose to not even extract,
much less install, from the list...

--- configure	2011-08-19 11:59:12.000000000 -0400
+++ configure	2011-09-23 17:34:13.000000000 -0400
@@ -22859,5 +22859,5 @@
 #	vips-$VIPS_MAJOR_VERSION.$VIPS_MINOR_VERSION.pc
 # in AC_OUTPUT, but that seems to break for some combinations of sh/m4
-ac_config_files="$ac_config_files vips-7.26.pc vipsCC-7.26.pc Makefile libvips/include/vips/version.h libvips/include/Makefile libvips/include/vips/Makefile libvips/Makefile libvips/arithmetic/Makefile libvips/boolean/Makefile libvips/cimg/Makefile libvips/colour/Makefile libvips/conversion/Makefile libvips/convolution/Makefile libvips/deprecated/Makefile libvips/format/Makefile libvips/freq_filt/Makefile libvips/histograms_lut/Makefile libvips/inplace/Makefile libvips/iofuncs/Makefile libvips/mask/Makefile libvips/morphology/Makefile libvips/mosaicing/Makefile libvips/other/Makefile libvips/relational/Makefile libvips/resample/Makefile libvips/video/Makefile libvipsCC/include/Makefile libvipsCC/include/vips/Makefile libvipsCC/Makefile tools/Makefile tools/batch_crop tools/batch_image_convert tools/batch_rubber_sheet tools/light_correct tools/shrink_width swig/Makefile swig/vipsCC/Makefile swig/python/setup.py man/Makefile doc/Makefile doc/reference/Makefile doc/reference/libvips-docs.sgml po/Makefile.in"
+ac_config_files="$ac_config_files vips-7.26.pc vipsCC-7.26.pc Makefile libvips/include/vips/version.h libvips/include/Makefile libvips/include/vips/Makefile libvips/Makefile libvips/arithmetic/Makefile libvips/boolean/Makefile libvips/cimg/Makefile libvips/colour/Makefile libvips/conversion/Makefile libvips/convolution/Makefile libvips/deprecated/Makefile libvips/format/Makefile libvips/freq_filt/Makefile libvips/histograms_lut/Makefile libvips/inplace/Makefile libvips/iofuncs/Makefile libvips/mask/Makefile libvips/morphology/Makefile libvips/mosaicing/Makefile libvips/other/Makefile libvips/relational/Makefile libvips/resample/Makefile libvips/video/Makefile libvipsCC/include/Makefile libvipsCC/include/vips/Makefile libvipsCC/Makefile tools/Makefile tools/batch_crop tools/batch_image_convert tools/batch_rubber_sheet tools/light_correct tools/shrink_width swig/Makefile swig/vipsCC/Makefile swig/python/setup.py man/Makefile po/Makefile.in"
 
 cat >confcache <<\_ACEOF
--- Makefile.in	2011-08-19 11:59:16.000000000 -0400
+++ Makefile.in	2011-09-23 17:41:49.000000000 -0400
@@ -93,5 +93,5 @@
 ETAGS = etags
 CTAGS = ctags
-DIST_SUBDIRS = libvips tools po man doc libvipsCC swig
+DIST_SUBDIRS = libvips tools po man libvipsCC swig
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 distdir = $(PACKAGE)-$(VERSION)
@@ -357,5 +357,4 @@
 	po \
 	man \
-	doc \
 	$(C_COMPILE_DIR) \
 	$(P_COMPILE_DIR) 
@@ -907,7 +906,4 @@
 
 install-exec-hook:
-	-rm -rf ${DESTDIR}$(datadir)/doc/vips
-	$(mkinstalldirs) ${DESTDIR}$(datadir)/doc/vips
-	-cp -r ${top_srcdir}/doc/html ${top_srcdir}/doc/pdf ${DESTDIR}$(datadir)/doc/vips 
 
 dist-hook: