upstream #1115

Job	Run time
ruby-head-valgrind (disable)	5m 55s
jruby-head	1m 17s
html5lib-tests	50s
ruby-head (ubuntu, enable)	48s
ruby-head (ubuntu, disable)	2m 56s
truffleruby-head (--disable-system-libraries --disable-static)	3m 32s
xmlsoft-head (ubuntu)	1m 49s
truffleruby-head (--disable-system-libraries --enable-static)	5m 18s
ruby-head (windows, enable)	3m 49s
xmlsoft-head (windows)	9m 37s
truffleruby-head (--enable-system-libraries)	2m 19s
ruby-head (windows, disable)	6m 9s
xmlsoft-head-valgrind	6m 55s
ruby-head (macos, enable)	31s
xmlsoft-head (macos)	1m 34s
ruby-head (macos, disable)	2m 48s
	56m 7s

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