qt5: update to 5.7.1 * src/qtbase-1-fixes.patch: update patch from mxe.cc * src/qtbase.mk: update version, checksum, use -no-pch * src/qtimageformats-1.patch: update patch from mxe.cc * src/qtimageformats.mk: update checksum * src/qtsvg.mk: update checksum * src/qttools.mk: update checksum

#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;
}