Fix build without git on "wip" branch.

[Vagrant Cascadian]

In the "wip" branch, the attempt to build without git was a bit overly
aggressive in the purging of GIT.

live well,
  vagrant

From 73bb68e86318a6bc0fe191db663be97f94556956 Mon Sep 17 00:00:00 2001
From: Vagrant Cascadian <address@hidden>
Date: Sat, 7 Dec 2019 19:59:00 +0100
Subject: [PATCH] Fix build without git

Commit "1863c0d843a5fe4e94e8cb923cc0896f30fceeeb" removed the
substitution of @GIT@ when, resulting in the GIT variable being set to
"@GIT@" rather than "" when git is not installed.
---
 configure | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure b/configure
index 8a6b25ad..d48492d0 100755
--- a/configure
+++ b/configure
@@ -587,6 +587,7 @@ See \"Porting GNU Mes\" in the manual, or try 
--with-courage\n" mes-system)
                      ("@CC@" . ,(or (file-name "cc" deps) ""))
                      ("@DIFF@" . ,(or (file-name "diff" deps) (string-append 
abs-top-builddir "/pre-inst-env diff.scm")))
                      ("@DOT@" . ,(or (file-name "dot" deps) ""))
+                     ("@GIT@" . ,(or (file-name "git" deps) ""))
                      ("@GUILE@" . ,guile)
                      ("@GUIX@" . ,(or (file-name "guix" deps) ""))
                      ("@HELP2MAN@" . ,(or (file-name "help2man" deps) ""))
-- 
2.20.1

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