Merge branch 'ralf/fail' into 'master'

normalize for Fail printing locations

See merge request !334

test-normalizer.sed

@@ -2,3 +2,5 @@
 s/subgoal/goal/g
 # merge with subsequent line for https://github.com/coq/coq/pull/14999
 /[0-9]* focused goals\?$/{N;s/\n */ /;}
+# locations in Fail added in https://github.com/coq/coq/pull/15174
+/^File/d