[gtk+] Make gdk-pixbuf-csource work on Windows also in the build tree.

[Tor Lillqvist <tml src gnome org>]

commit ad3be192517c10097b91a618f62fd741d8e681f6
Author: Sam Thursfield <ssssam gmail com>
Date:   Sun Aug 2 10:40:13 2009 +0300

    Make gdk-pixbuf-csource work on Windows also in the build tree.
    
    Patch from bug #590448.

 gdk-pixbuf/gdk-pixbuf-io.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gdk-pixbuf/gdk-pixbuf-io.c b/gdk-pixbuf/gdk-pixbuf-io.c
index bc357bd..664e519 100644
--- a/gdk-pixbuf/gdk-pixbuf-io.c
+++ b/gdk-pixbuf/gdk-pixbuf-io.c
@@ -277,6 +277,12 @@ correct_prefix (gchar **path)
   if (strncmp (*path, GTK_PREFIX "/", strlen (GTK_PREFIX "/")) == 0 ||
       strncmp (*path, GTK_PREFIX "\\", strlen (GTK_PREFIX "\\")) == 0)
     {
+      if (strlen(*path) > 5 && strncmp (*path - 5, ".libs", 5) == 0)
+        {
+          /* We are being run from inside the build tree, and shouldn't mess about. */
+          return;
+	}
+
       /* This is an entry put there by gdk-pixbuf-query-loaders on the
        * packager's system. On Windows a prebuilt GTK+ package can be
        * installed in a random location. The gdk-pixbuf.loaders file