Sync with 'master'

Author: gitster

Documentation/RelNotes/2.50.0.adoc

@@ -62,6 +62,9 @@ UI, Workflows & Features
    delta chains from forming in a corner case even when there is no
    such cycle.
 
+ * Make repository clean-up tasks "gc" can do available to "git
+   maintenance" front-end.
+
 
 Performance, Internal Implementation, Development Support etc.
 --------------------------------------------------------------
@@ -286,6 +289,11 @@ Fixes since v2.49
    also existed on the working tree, which has been corrected.
    (merge ec727e189c kj/glob-path-with-special-char later to maint).
 
+ * The fallback implementation of open_nofollow() depended on
+   open("symlink", O_NOFOLLOW) to set errno to ELOOP, but a few BSD
+   derived systems use different errno, which has been worked around.
+   (merge f47bcc3413 cf/wrapper-bsd-eloop later to maint).
+
  * Other code cleanup, docfix, build fix, etc.
    (merge 227c4f33a0 ja/doc-block-delimiter-markup-fix later to maint).
    (merge 2bfd3b3685 ab/decorate-code-cleanup later to maint).