Merge pull request #2612 from Eriner/master

update .gopmfile to reflect git-module update

.gopmfile

@@ -17,7 +17,7 @@ github.com/go-sql-driver/mysql = commit:b4db83c
 github.com/go-xorm/core = commit:1e2868c
 github.com/go-xorm/xorm = commit:24c1f3c
 github.com/gogits/chardet = commit:2404f77725
-github.com/gogits/git-module = commit:3c8c495
+github.com/gogits/git-module = commit:3b40eae
 github.com/gogits/go-gogs-client = commit:2f4342d
 github.com/issue9/identicon = commit:f8c0d2c
 github.com/kardianos/minwinsvc = commit:cad6b2b