[gnome-documents] build: Ensure we update submodules inside the srcdir

[Emmanuele Bassi <ebassi src gnome org>]

commit 7668513171a0e9812a3fc2fc396e8b8d960e9072
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Fri Jun 3 12:26:24 2016 +0100

    build: Ensure we update submodules inside the srcdir
    
    Instead of the build directory.

 autogen.sh |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index b87ffaa..e008406 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -4,6 +4,8 @@
 srcdir=`dirname $0`
 test -z "$srcdir" && srcdir=.
 
+olddir=`pwd`
+
 PKG_NAME="gnome-documents"
 ACLOCAL_FLAGS="-I libgd $ACLOCAL_FLAGS"
 
@@ -18,8 +20,11 @@ which gnome-autogen.sh || {
     exit 1
 }
 
+# We need to run git submodule update inside the src directory
+cd "$srcdir"
 git submodule update --init --recursive
 
+cd "$olddir"
 REQUIRED_AUTOCONF_VERSION=2.59
 REQUIRED_AUTOMAKE_VERSION=1.9
 REQUIRED_INTLTOOL_VERSION=0.40.0