* Fix build with llvm15+ from ports and from base: - ISO C++17 does not allow 'register' storage class specifier; - require -fPIC on i386. * Fix load kernel modules on host and guest i386 if kernel compiled with PAE option: add non-default option PAE to ports. Based on patches from mi@. PR: 279257 224616 Approved by: vbox (maintainer, timeout 1 month and 6 years)