Improved Windows DLL calls

lib/sys/sys_windows.q

@@ -1,14 +1,13 @@
-write(_ Int, _ Pointer, _ Int) -> Int {
-	// WriteFile(fd, buffer, length, out numberOfBytesWritten, out overlapped)
-	return 0
+write(fd Int, address Pointer, length Int) -> Int {
+	// out numberOfBytesWritten
+	// out overlapped
+	return kernel32.WriteFile(fd, address, length)
 }
 
-mmap(_ Int, _ Int, _ Int, _ Int) -> Pointer {
-	// VirtualAlloc(address, length, flags, protection)
-	return 0
+mmap(address Int, length Int, protection Int, flags Int) -> Pointer {
+	return kernel32.VirtualAlloc(address, length, flags, protection)
 }
 
-exit(_ Int) {
-	// ExitProcess(code)
-	return
+exit(code Int) {
+	kernel32.ExitProcess(code)
 }