OpenSystemsDevelopment / qpdf

fix-qdf assumes there is exactly one XRef stream and that it is at the
end of the file.

If the value of /CS in the inline image dictionary was is key in the
page's /Resource -> /ColorSpace dictionary, properly resolve it by
referencing the proper colorspace, and not just the name, in the
external image dictionary.

This change makes it possible to get both the user and owner password
from the file name of all the encryption test files.

Allow exit status-based checking of whether a file is encrypted or
requires a password without necessarily supplying the correct
password. Useful for scripting.

I don't use the travis build since I get more functionality on Azure
pipelines. I should remove it.

14.04 has been out of security support for a while.

Fix is based on guidance
https://support.microsoft.com/en-us/help/238187/cryptacquirecontext-use-and-troubleshooting
and is the proper fix for #285/#286

This commit adds the preserve_eol flags but doesn't implement EOL
preservation yet.

For wildcard expansion to work properly with the msvc binary, it is
necessary to link with setargv.obj or wsetargv.obj, depending on
whether wmain is in use.

This makes it more likely for someone who notices a big slow-down in
page splitting to discover the option.

Even though this is disallowed by the spec, files like this have been
encountered in the wild.