headers: Disable gcc warning that __INTRINSIC_PROLOG is not portable
crt: Regenerate Makefile.in
crt: Provide __p__osplatform() for all CRT import libraries
crt: Provide __p__osver(), __p__winmajor(), __p__winminor() and __p__winver() for msvcr90+ and UCRT
crt: Provide __p__winver() function also for ARM msvcrt.dll import library
crt: Regenerate Makefile.in
crt: Define and use __p_ function for _osplatform
crt: Regenerate Makefile.in