[gobject-introspection] giscanner: Support srcdir != builddir

[Colin Walters <walters src gnome org>]

commit 158db28b46eb1e9b24705bf8e9c3e6ca69ae54b4
Author: Colin Walters <walters verbum org>
Date:   Thu Jun 23 17:26:57 2011 -0400

    giscanner: Support srcdir != builddir
    
    __path__ modification trick from Johan Dahlin.

 giscanner/__init__.py |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/giscanner/__init__.py b/giscanner/__init__.py
index 5614288..5ab7a95 100644
--- a/giscanner/__init__.py
+++ b/giscanner/__init__.py
@@ -17,3 +17,8 @@
 # Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 # Boston, MA 02111-1307, USA.
 #
+
+import os
+builddir = os.environ.get('UNINSTALLED_INTROSPECTION_BUILDDIR')
+if builddir is not None:
+    __path__.append(os.path.join(builddir, 'giscanner'))