maint: prefer https: to git:

The idea is to defend against some adversary-in-the-middle attacks.
Also prefer git.savannah.gnu.org over its shorter alias, git.sv.gnu.org
to avoid a warning e.g., from git clone.
Also, drop any final ".git" suffix on the resulting URIs.
Inspired by Paul Eggert's nearly identical changes to coreutils.
Induced by running these commands:
git grep -l 'git clone git:'|xargs perl -pi -e \
  's{(git clone) git://(\S+)/([^/]+)\b}{$1 https://$2/git/$3}'
git grep -l git.sv.gn \
  |xargs perl -pi -e 's{git\.sv\.gnu}{git\.savannah\.gnu}'
perl -pi -e \
  's{(url =) git://(\S+)/([^/.]+)(\.git)?\b}{$1 https://$2/git/$3}'\
  .gitmodules
* .gitmodules: As above.
* HACKING: Likewise.
* README-hacking: Likewise.
* src/grep.c (main): Likewise.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/grep.c b/src/grep.c
index ebb09a3b..7547b641 100644
--- a/src/grep.c
+++ b/src/grep.c
@@ -2829,7 +2829,7 @@ main (int argc, char **argv)
       version_etc (stdout, getprogname (), PACKAGE_NAME, VERSION,
                    (char *) NULL);
       puts (_("Written by Mike Haertel and others; see\n"
-              "<https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS>."));
+              "<https://git.savannah.gnu.org/cgit/grep.git/tree/AUTHORS>."));
       return EXIT_SUCCESS;
     }