merge revision(s) b360588cd3cbac5fb4f004aa53a8fdc715906719: [Backport #15856]

	Sort feature index arrays by the priority of file types [Bug #15856]

	When looking for libraries to load with a feature name without
	extension, `.rb` files are given priority. However, since the
	feature index arrays were not in that order of priority, but in
	the order in which they were loaded, a lower priority extension
	library might be returned. In that case, the `.rb` file had to be
	searched for again from the `$LOAD_PATH`, resulting in poor
	performance.
	---
	 load.c | 52 +++++++++++++++++++++++++++++++++++++++++++++-------
	 1 file changed, 45 insertions(+), 7 deletions(-)

0 files changed, 0 insertions, 0 deletions