Win10: Use GetSystemTimePreciseAsFileTime directly

Author: ChrisDenton

library/std/src/sys/pal/windows/c.rs

@@ -346,6 +346,7 @@ compat_fn_with_fallback! {
 
     // >= Win8 / Server 2012
     // https://docs.microsoft.com/en-us/windows/win32/api/sysinfoapi/nf-sysinfoapi-getsystemtimepreciseasfiletime
+    #[cfg(target_vendor = "win7")]
     pub fn GetSystemTimePreciseAsFileTime(lpsystemtimeasfiletime: *mut FILETIME) -> () {
         GetSystemTimeAsFileTime(lpsystemtimeasfiletime)
     }

library/std/src/sys/pal/windows/c/bindings.txt

@@ -2475,6 +2475,7 @@ Windows.Win32.System.Pipes.PIPE_WAIT
 Windows.Win32.System.SystemInformation.GetSystemDirectoryW
 Windows.Win32.System.SystemInformation.GetSystemInfo
 Windows.Win32.System.SystemInformation.GetSystemTimeAsFileTime
+Windows.Win32.System.SystemInformation.GetSystemTimePreciseAsFileTime
 Windows.Win32.System.SystemInformation.GetWindowsDirectoryW
 Windows.Win32.System.SystemInformation.PROCESSOR_ARCHITECTURE
 Windows.Win32.System.SystemInformation.SYSTEM_INFO

library/std/src/sys/pal/windows/c/windows_sys.rs

@@ -345,6 +345,10 @@ extern "system" {
     pub fn GetSystemTimeAsFileTime(lpsystemtimeasfiletime: *mut FILETIME) -> ();
 }
 #[link(name = "kernel32")]
+extern "system" {
+    pub fn GetSystemTimePreciseAsFileTime(lpsystemtimeasfiletime: *mut FILETIME) -> ();
+}
+#[link(name = "kernel32")]
 extern "system" {
     pub fn GetTempPathW(nbufferlength: u32, lpbuffer: PWSTR) -> u32;
 }