upstream #1030

Job	Run time
jruby-head	1m 4s
ruby-head-valgrind (disable)	5m 27s
ruby-head (ubuntu, enable)	49s
html5lib-tests	53s
ruby-head (ubuntu, disable)	52s
ruby-head (windows, enable)	3m 5s
truffleruby-head (--disable-system-libraries --disable-static)	3m 3s
xmlsoft-head (ubuntu)	1m 44s
truffleruby-head (--disable-system-libraries --enable-static)	3m 1s
ruby-head (windows, disable)	3m 4s
xmlsoft-head-valgrind	6m 0s
xmlsoft-head (windows)	9m 34s
truffleruby-head (--enable-system-libraries)	2m 31s
xmlsoft-head (macos)	1m 40s
ruby-head (macos, enable)	34s
ruby-head (macos, disable)	1m 26s
	44m 47s

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