Update build tools for native mingw * src/build-m4.mk: do nothing for native mingw build * Makefile.in: - add bison, m4 as natve mingw, and python as jit build requirements. - remove build-bison as a mingw build dependancy * index.html: Add msys-bison to mingw required packages and mention ghostscript and python.

#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;
}