avoid frequent file open and close for dumps, ignore WPC transitional… #30

Job	Run time
Detect version	4s
Build libdmdutil-win-x64	2m 34s
Build libdmdutil-win-x86	8m 44s
Build libdmdutil-macos-arm64	1m 22s
Build libdmdutil-macos-x64	1m 31s
Build libdmdutil-linux-x64	47s
Build libdmdutil-linux-aarch64	6m 47s
Build libdmdutil-android-arm64-v8a	28s
Build libdmdutil-ios-arm64	37s
Build libdmdutil-tvos-arm64	30s
Build libdmdutil-macos	19s
	23m 43s

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