[GN][NFC] Update readme example to functional command
[PPC][NFC] store operands are dst not src
headers: correct value of _M_IX86 based on arch
crt: Handle .ctors and .dtors within mingw-w64
intrincs: check for __rdtsc
lib32 msvcrt add mkgmtime exports
Handle __CTOR_LIST__ internally within mingw-w64
crt: armv7 does not have __initenv in libmsvcrt