Experiment with win package identity #1026

Job	Run time
test-juliaup (x86_64-pc-windows-msvc)	6m 34s
check-juliaup (x86_64-pc-windows-msvc-windowsstore)	2m 15s
test-juliaup (x86_64-pc-windows-gnu)	7m 15s
check-juliaup (x86_64-pc-windows-msvc-windowsappinstaller)	2m 30s
test-juliaup (x86_64-apple-darwin)	6m 38s
check-juliaup (x86_64-pc-windows-gnu-msi)	2m 35s
test-juliaup (x86_64-unknown-linux-gnu)	3m 21s
check-juliaup (x86_64-pc-windows-gnu-msi)	2m 42s
test-juliaup (x86_64-unknown-linux-musl)	4m 8s
check-juliaup (x86_64-apple-darwin)	44s
test-juliaup (i686-pc-windows-msvc)	8m 38s
check-juliaup (x86_64-unknown-linux-gnu)	34s
test-juliaup (i686-pc-windows-gnu)	9m 13s
check-juliaup (x86_64-unknown-linux-musl)	1m 3s
check-juliaup (i686-pc-windows-msvc-windowsstore)	2m 49s
check-juliaup (i686-pc-windows-msvc-windowsappinstaller)	3m 59s
check-juliaup (i686-pc-windows-gnu-msi)	1m 41s
check-juliaup (i686-unknown-linux-gnu)	48s
check-juliaup (i686-unknown-linux-musl)	1m 6s
check-juliaup (aarch64-unknown-linux-gnu)	54s
check-juliaup (aarch64-unknown-linux-musl)	58s
check-juliaup (aarch64-apple-darwin)	39s
	1h 11m 4s

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