[gtk-doc] mkdb: add missing --version options

[Stefan Sauer <stefkost src gnome org>]

commit 0edbf0393d09a05ae86e8c3a2a3c57486c95a0e3
Author: Stefan Sauer <ensonic users sf net>
Date:   Mon May 29 18:07:04 2017 +0200

    mkdb: add missing --version options

 gtkdoc-mkdb.in |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gtkdoc-mkdb.in b/gtkdoc-mkdb.in
index ff061e6..9765904 100755
--- a/gtkdoc-mkdb.in
+++ b/gtkdoc-mkdb.in
@@ -26,10 +26,11 @@ import argparse
 import sys
 sys.path.append('@PYTHON_PACKAGE_DIR@')
 
-from gtkdoc import common, mkdb
+from gtkdoc import common, config, mkdb
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()
+    parser.add_argument('--version', action='version', version=config.version)
     parser.add_argument('--module', default='')
     parser.add_argument('--source-dir', action='append', dest='source_dir', default=[])
     parser.add_argument('--source-suffixes', dest='source_suffixes', default='')