patch 9.1.0816: tests: not clear what tests cause asan failures

Problem:  tests: not clear what tests cause asan failures
Solution: append testname to $ASAN_OPTIONS

Mention what test causes ASAN failures by appending the testname
to log_path in $ASAN_OPTIONS/$UBSAN_OPTIONS. This assumes 'log_path' is
always the last sub-option in $ASAN_OPTIONS.

While at it, also make the CI run with `-O0` instead of `-O1` when ASAN
is enable since this causes line numbers to disappear.

closes: #15927

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 3931067..4831281 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    816,
+/**/
     815,
 /**/
     814,