build

add C++20 module #274

Job	Run time
ubuntu cmake	12s
ubuntu (g++, standard)	1m 7s
macos cmake	20s
ubuntu (g++, PUGIXML_WCHAR_MODE)	1m 9s
ubuntu (g++, PUGIXML_COMPACT)	1m 10s
ubuntu (g++, PUGIXML_NO_EXCEPTIONS)	1m 2s
windows (Win32, standard)	2m 20s
ubuntu (g++, PUGIXML_STRING_VIEW)	1m 9s
ubuntu (clang++, standard)	49s
windows (Win32, PUGIXML_WCHAR_MODE)	1m 56s
ubuntu (clang++, PUGIXML_WCHAR_MODE)	50s
windows (Win32, PUGIXML_COMPACT)	2m 1s
ubuntu (clang++, PUGIXML_COMPACT)	53s
windows (Win32, PUGIXML_NO_EXCEPTIONS)	2m 0s
windows (Win32, PUGIXML_STRING_VIEW)	2m 17s
ubuntu (clang++, PUGIXML_NO_EXCEPTIONS)	47s
windows (x64, standard)	1m 52s
ubuntu (clang++, PUGIXML_STRING_VIEW)	52s
windows (x64, PUGIXML_WCHAR_MODE)	1m 52s
macos (clang++, standard)	1m 1s
windows (x64, PUGIXML_COMPACT)	1m 41s
macos (clang++, PUGIXML_WCHAR_MODE)	1m 4s
windows (x64, PUGIXML_NO_EXCEPTIONS)	1m 13s
macos (clang++, PUGIXML_COMPACT)	47s
windows (x64, PUGIXML_STRING_VIEW)	1m 33s
macos (clang++, PUGIXML_NO_EXCEPTIONS)	46s
macos (clang++, PUGIXML_STRING_VIEW)	42s
	33m 25s

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