Ruby

Merge pull request #2916 from Earlopain/rubyvm-is-of #8070

Job	Run time
C99_compile (4.0)	1m 8s
clang_compile (head)	1m 19s
C99_compile (head)	1m 0s
clang_compile (4.0)	1m 35s
test (3.3, test)	2m 33s
test (4.0, test)	2m 18s
test (3.4, test)	2m 25s
test (head, stdlib_test rubocop)	2m 7s
test (4.0, rubocop validate test_doc build test_generate_stdlib raap)	2m 34s
test (4.0, stdlib_test)	1m 57s
test (4.0, stdlib_test, --enable-frozen-string-literal)	1m 57s
test (3.2, test)	2m 12s
test (head, test)	2m 20s
test (asan-release, test)	7m 49s
test (4.0, typecheck_test)	1m 19s
test (4.0, test, --enable-frozen-string-literal)	2m 18s
	36m 51s

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