Qt5: Update to version 5.15.3. * src/qtbase.mk: Update version and checksum. * src/qtbase-2-gcc11.patch: Remove hunks from patch that have been applied upstream. * src/qtimageformats.mk, src/qtsvg.mk, src/qttools.mk, src/qttranslationse.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;
}