[gobject-introspection] build: Properly export g_interface_info_find_signal

[Torsten SchÃnfeld <tsch src gnome org>]

commit 9efe417e2e636df49ff6fb822dc84e7ce72a0ce1
Author: Torsten SchÃnfeld <kaffeetisch gmx de>
Date:   Mon Jan 7 17:35:47 2013 +0100

    build: Properly export g_interface_info_find_signal
    
    It was missing from girepository.symbols.

 girepository/girepository.symbols |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/girepository/girepository.symbols b/girepository/girepository.symbols
index 11d2bb6..8cb6c83 100644
--- a/girepository/girepository.symbols
+++ b/girepository/girepository.symbols
@@ -59,6 +59,7 @@ g_function_info_get_vfunc
 g_function_info_invoke
 g_invoke_error_quark
 g_interface_info_find_method
+g_interface_info_find_signal
 g_interface_info_find_vfunc
 g_interface_info_get_constant
 g_interface_info_get_iface_struct