build

add C++20 module #276

Job	Run time
ubuntu cmake	11s
macos cmake	15s
windows (Win32, standard)	1m 54s
ubuntu (g++, standard)	1m 9s
windows (Win32, PUGIXML_WCHAR_MODE)	1m 48s
ubuntu (g++, PUGIXML_WCHAR_MODE)	1m 8s
windows (Win32, PUGIXML_COMPACT)	1m 52s
ubuntu (g++, PUGIXML_COMPACT)	1m 8s
windows (Win32, PUGIXML_NO_EXCEPTIONS)	1m 46s
ubuntu (g++, PUGIXML_NO_EXCEPTIONS)	1m 2s
windows (Win32, PUGIXML_STRING_VIEW)	2m 14s
windows (x64, standard)	1m 32s
ubuntu (g++, PUGIXML_STRING_VIEW)	1m 5s
windows (x64, PUGIXML_WCHAR_MODE)	1m 17s
ubuntu (clang++, standard)	49s
windows (x64, PUGIXML_COMPACT)	1m 36s
ubuntu (clang++, PUGIXML_WCHAR_MODE)	50s
windows (x64, PUGIXML_NO_EXCEPTIONS)	1m 10s
ubuntu (clang++, PUGIXML_COMPACT)	52s
windows (x64, PUGIXML_STRING_VIEW)	2m 16s
ubuntu (clang++, PUGIXML_NO_EXCEPTIONS)	48s
ubuntu (clang++, PUGIXML_STRING_VIEW)	50s
macos (clang++, standard)	44s
macos (clang++, PUGIXML_WCHAR_MODE)	46s
macos (clang++, PUGIXML_COMPACT)	47s
macos (clang++, PUGIXML_NO_EXCEPTIONS)	51s
macos (clang++, PUGIXML_STRING_VIEW)	1m 14s
	31m 54s

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