Open non-blocking regular files as overlapped on Windows #12138

Job	Run time
deploy_api_docs	0s
check_format	1m 36s
x86_64-gnu-test-preview_mt	5m 39s
x86_64-musl-test	38m 10s
x86_64-gnu-test (1.7.3)	35m 57s
x86_64-gnu-test (1.8.2)	34m 18s
x86_64-gnu-test (1.9.2)	33m 48s
x86_64-gnu-test (1.10.1)	35m 57s
x86_64-gnu-test (1.11.2)	35m 43s
x86_64-gnu-test (1.12.2)	33m 37s
x86_64-gnu-test (1.13.1)	32m 52s
x86_64-gnu-test (1.0.0, FLAGS=-Dwithout_ffi USE_PCRE1=true)	32m 14s
x86_64-gnu-test (1.1.1, FLAGS=-Dwithout_ffi USE_PCRE1=true)	33m 32s
x86_64-gnu-test (1.2.2, USE_PCRE1=true)	34m 42s
x86_64-gnu-test (1.3.2, USE_PCRE1=true)	35m 8s
x86_64-gnu-test (1.4.1, USE_PCRE1=true)	35m 12s
x86_64-gnu-test (1.5.1, USE_PCRE1=true)	33m 57s
x86_64-gnu-test (1.6.2, USE_PCRE1=true)	36m 20s
	8h 48m 42s

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