clang+libcxx builds. patch from: 2c904e0cb8/
Also, install doc/ & add test case installs some djvu-format files so we can run a functional test on the built binaries.
Upgrade djvulibre to version 3.5.25.3.
Add a patch that's upstream to fix missing `INKSCAPE` file.
Curl a half-dozen missing pngs that are now in HEAD in response
to a bug report I filed. Fixes compile error with all compilers.
Add comments containing the removal version and bug report urls.
Remove unrecognized `--disable-debug`, '--with-x', and '--with-qt'.
Use the given flag named `--disable-desktopfiles` rather than the
negatation flag.
Tested on Lion using clang and llvm from XCode-4.3.3.
Signed-off-by: Adam Vandenberg <flangy@gmail.com>
