Add file with hg id of MXE-Octave to dist package (bug #52794). * tools/mk-hg-id.sh: New file copied (mostly) from Octave sources. * Makefile.in: Call shell script, copy HG-ID in make dist * binary-dist-rules.mk: Copy HG-ID to dist directory. * dist-files.mk: add mk-hg-id.sh to dist files

#include <iostream>
#include <cpp/poppler-version.h>

int main(int argc, char *argv[])
{
    (void)argc;
    (void)argv;

    std::cout << "Poppler version: " << poppler::version_string() << std::endl;

    return 0;
}