Cleaning up distcheck.
# These files will be included with the dist.
EXTRA_DIST = netcdf.m4 DoxygenLayout.xml Doxyfile.in footer.html \
-mainpage.dox tutorial.dox guide.dox cdl.dox \
+mainpage.dox tutorial.dox cdl.dox \
architecture.dox internal.dox windows-binaries.md \
building-with-cmake.md CMakeLists.txt groups.dox notes.md \
install-fortran.md all-error-codes.md credits.md auth.md \
