move git_version_string into version.c

The global git_version_string currently lives in git.c, but
doesn't have anything to do with the git wrapper. Let's move
it into its own file, where it will be more appropriate to
build more version-related functions.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/builtin.h b/builtin.h
index 338f540e39..dea1643faf 100644
--- a/builtin.h
+++ b/builtin.h
@@ -9,7 +9,6 @@
 
 #define DEFAULT_MERGE_LOG_LEN 20
 
-extern const char git_version_string[];
 extern const char git_usage_string[];
 extern const char git_more_info_string[];