Fall back to F_SET_RW_HINT if F_SET_FILE_RW_HINT is not supported #716

Job	Run time
build (linux-gcc)	8m 48s
build (linux-clang)	9m 16s
build (macos)	8m 17s
build (linux-i686-gcc)	8m 33s
build (android)	35s
build (windows-cygwin-64)	12m 23s
build (windows-cygwin-32)	11m 57s
build (windows-msys2-64)	13m 0s
build (android-recovery, ubuntu-22.04, aarch64-linux-android32)	1m 28s
	1h 14m 17s

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