teams: Adjust shebang to use 'guix repl'.

This ensures the correct Guix dependencies are always available for the
script.

* etc/teams.scm.in: Rename to...
* etc/teams.scm: ... this.  Adjust shebang.
* .gitignore: No longer ignore it.
* configure.ac: Do not process it with AC_CONFIG_FILES.

Reported-by: Clément Lassieur <clement@lassieur.org>
Fixes: https://issues.guix.gnu.org/66605
Change-Id: I7a01750c6c5f0696b6c36b1e6caa9389d9e6822c

.gitignore

@@ -68,7 +68,6 @@
 /doc/version.texi
 /doc/version-*.texi
 /etc/committer.scm
-/etc/teams.scm
 /etc/gnu-store.mount
 /etc/guix-daemon.cil
 /etc/guix-daemon.conf

configure.ac

@@ -281,7 +281,6 @@ AC_CONFIG_FILES([Makefile
                  guix/config.scm])
 
 AC_CONFIG_FILES([etc/committer.scm], [chmod +x etc/committer.scm])
-AC_CONFIG_FILES([etc/teams.scm], [chmod +x etc/teams.scm])
 AC_CONFIG_FILES([test-env:build-aux/test-env.in], [chmod +x test-env])
 AC_CONFIG_FILES([pre-inst-env:build-aux/pre-inst-env.in],
   [chmod +x pre-inst-env])

etc/teams.scm

@@ -1,5 +1,9 @@
-#!@GUILE@ \
+#!/bin/sh
---no-auto-compile -s
+# Extra care is taken here to ensure this script can run in most environments,
+# since it is invoked by 'git send-email'.
+pre_inst_env_maybe=
+command -v guix > /dev/null || pre_inst_env_maybe=./pre-inst-env
+exec $pre_inst_env_maybe guix repl -- "$0" "$@"
 !#
 
 ;;; GNU Guix --- Functional package management for GNU