Git 2.20-rc1

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/RelNotes/2.20.0.txt

@@ -258,8 +258,8 @@ Performance, Internal Implementation, Development Support etc.
    used during tests are getting renamed for consistency.
    (merge 4231d1ba99 bp/rename-test-env-var later to maint).
- * A new extension to the index file has been introduced, which allows
-   the index file to be read in parallel for performance.
+ * A pair of new extensions to the index file have been introduced.
+   They allow the index file to be read in parallel for performance.
  * The oidset API was built on top of the oidmap API which in turn is
    on the hashmap API.  Replace the implementation to build on top of
@@ -634,6 +634,11 @@ Fixes since v2.19
    used by the diffstat (shown in the cover letter).
    (merge 284aeb7e60 nd/format-patch-cover-letter-stat-width later to maint).
+ * The way .git/index and .git/sharedindex* files were initially
+   created gave these files different perm bits until they were
+   adjusted for shared repository settings.  This was made consistent.
+   (merge c9d6c78870 cc/shared-index-permbits later to maint).
+
  * Code cleanup, docfix, build fix, etc.
    (merge 96a7501aad ts/doc-build-manpage-xsl-quietly later to maint).
    (merge b9b07efdb2 tg/conflict-marker-size later to maint).

GIT-VERSION-GEN

 #!/bin/sh
 GVF=GIT-VERSION-FILE
-DEF_VER=v2.20.0-rc0
+DEF_VER=v2.20.0-rc1
 LF='
 '