merge revision(s) 9efd590a,a55eb9a2: [Backport #17572]

	Rationalize floats in coerce [Bug #17572]

	---
	 rational.c | 16 +++++++++++-----
	 1 file changed, 11 insertions(+), 5 deletions(-)

	Make reciprocal properly of non-integral rational [Bug #17572]

	---
	 rational.c                 | 2 +-
	 test/ruby/test_rational.rb | 7 +++++++
	 2 files changed, 8 insertions(+), 1 deletion(-)